AD 94-22-01
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-10-10 | Airworthiness Directives; McDonnell Douglas Model DC-10-10, -10F, -30, -30F, and -15 Series Airplanes and Model KC-10A (Military) Airplanes |
| aircraft | The Boeing Company | DC-10-10F | Airworthiness Directives; McDonnell Douglas Model DC-10-10, -10F, -30, -30F, and -15 Series Airplanes and Model KC-10A (Military) Airplanes |
| aircraft | The Boeing Company | DC-10-15 | Airworthiness Directives; McDonnell Douglas Model DC-10-10, -10F, -30, -30F, and -15 Series Airplanes and Model KC-10A (Military) Airplanes |
| aircraft | The Boeing Company | DC-10-30 | Airworthiness Directives; McDonnell Douglas Model DC-10-10, -10F, -30, -30F, and -15 Series Airplanes and Model KC-10A (Military) Airplanes |
| aircraft | The Boeing Company | DC-10-30F (KC-10A, KDC-10) | Airworthiness Directives; McDonnell Douglas Model DC-10-10, -10F, -30, -30F, and -15 Series Airplanes and Model KC-10A (Military) Airplanes |
Unsafe Condition
Ingestion of ice or snow into the number 2 engine due to accumulation on top of the fuselage and in the inlet.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect for ice or snow accumulation on top of the fuselage and in the inlet of the number 2 engine before starting the engine after parking in icing conditions. Remove any detected ice or snow prior to further flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Prior to starting the number 2 engine on any airplane that has been parked during icing conditions for any period of time during which ice or snow may have accumulated.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
McDonnell Douglas Model DC-10-10, -10F, -30, -30F, -15 series, and KC-10A (military) airplanes with General Electric CF6 series engines on number 2 position having gundrilled fan blades (e.g., part numbers 9010M33, 9137M39).
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Ingestion Of Ice Or Snow
Applicability Source Text
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AD Number:
94-22-01
Document Type:
AD Final Rules
Docket Number:
94-NM-22-AD
Subject Heading:
Airworthiness Directives; McDonnell Douglas Model DC-10-10, -10F, -30, -30F, and -15 Series Airplane...Show more
Subject:
Ingestion Of Ice Or Snow
Status:
Current
Citation:
(Federal Register: October 27, 1994 (Volume 59, Number 207))
Citation Publish Date:
10/27/1994
Effective Date:
11/28/1994
Make:
The Boeing Company
Model:
DC-10-10 | DC-10-10F | DC-10-15 | DC-10-30 | DC-10-30F (KC-10A, KDC-10)
Product Type:
Aircraft
Product Subtype:
Large Airplane
Affected AD:
Superseded AD:
75-04-11
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39 (59 FR 53931 NO. 207 10/27/94)
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 94-22-01
CITATION: [Federal Register: October 27, 1994 (Volume 59, Number 207)]
PAGE NUMBER: [Page 53931]
DOCKET NUMBER: 94-NM-22-AD
AMENDMENT: 39-9050
AD NUMBER: 94-22-01
SUBJECT HEADING: Airworthiness Directives; McDonnell Douglas Model DC-10-10, -10F, -30, -30F, and -15 Series Airplanes and Model KC-10A (Military) Airplanes
ACTION: Final rule.
SUMMARY: This amendment supersedes an existing airworthiness directive (AD), applicable to all McDonnell Douglas Model DC-10-10, -10F, -30, and -30F series airplanes, that currently requires inspections to detect ice or snow accumulation on top of the fuselage and in the inlet of the number 2 engine, and removal of ice and snow accumulation. This amendment adds certain airplanes to the applicability of the rule and limits the inspection requirement to only a certain group of airplanes. This amendment is prompted by the development of improved fan blades on certain engines and the identification of additional airplanes that are subject to the unsafe condition. The actions specified by this AD are intended to minimize damage to the number 2 engine due to ingestion of ice and snow.
DATES: EFFECTIVE DATE: November 28, 1994
ADDRESSES: Information related to this rule may be examined at the Federal Aviation Administration (FAA), Transport Airplane Directorate, Rules Docket, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, Transport Airplane Directorate, Los Angeles Aircraft Certification Office, 3229 East Spring Street, Long Beach, California.
FOR FURTHER INFORMATION CONTACT: Raymond Vakili, Aerospace Engineer, Propulsion Branch, ANM-141L, FAA, Transport Airplane Directorate, Los Angeles Aircraft Certification Office, 3229 East Spring Street, Long Beach, California 90806-2425; telephone (310) 988-5262; fax (310) 988-5210.
SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal Aviation Regulations (14 CFR part 39) by superseding AD 75-04-11, amendment 39-2094, which is applicable to all McDonnell Douglas Model DC-10-10, -10F, -30, and -30F series airplanes, was published in the Federal Register on July 18, 1994 (59 FR 36375). The action proposed to supersede AD 75-04-11, which currently requires inspections to detect ice and snow accumulation on top of the fuselage and in the inlet of the number 2 engine, and removal of ice and snow. The action proposed to add Model DC-10-15 series airplanes to the applicability of the rule, and to limit the inspection requirement to only a certain group of airplanes.
Interested persons have been afforded an opportunity to participate in the making of this amendment. Due consideration has been given to the single comment received.
The commenter supports the proposed rule.
After careful review of the available data, including the comment noted above, the FAA has determined that air safety and the public interest require the adoption of the rule as proposed.
There are approximately 379 McDonnell Douglas Model DC-10-10, -10F, -30, -30F, and -15 series airplanes and Model KC-10A (military) airplanes of the affected design in the worldwide fleet. The FAA estimates that 226 airplanes of U.S. registry will be affected by this AD. (Currently, there are no Model DC-10-15 series airplanes of U.S. registry that will be affected by this AD.)
The inspections that were previously required by AD 75-04-11, and retained in this AD take approximately 1 work hour per airplane to accomplish the required actions, and that the average labor rate is $55 per work hour. Based on these figures, the total cost impact of the inspection requirement on U.S. operators is estimated to be $12,430, or $55 per airplane, per inspection. This AD will only add the cost of inspections for the operators of Model KC-10A (military) airplanes.
For operators of Model DC-10-10, -10F, -30, and -30F series airplanes having all solid fan blades in the number 2 engine position, the economic burden will be reduced since the previous requirement to inspect these airplanes in accordance with the existing AD will be eliminated by this AD. However, this does not relieve operators of the responsibility to comply with the requirements of sections 91.527 ("Operating in icing conditions") and 121.629 ("Operation in icing conditions"--air carriers) of the Federal Aviation Regulations (14 CFR 91.527 and 121.629).
The total cost impact figure discussed above is based on assumptions that no operator has yet accomplished any of the requirements of this AD action, and that no operator would accomplish those actions in the future if this AD were not adopted.
The regulations adopted herein will not have substantial direct effects on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. Therefore, in accordance with Executive Order 12612, it is determined that this final rule does not have sufficient federalism implications to warrant the preparation of a Federalism Assessment.
For the reasons discussed above, I certify that this action (1) is not a "significant regulatory action" under Executive Order 12866; (2) is not a "significant rule" under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and (3) will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. A final evaluation has been prepared for this action and it is contained in the Rules Docket. A copy of it may be obtained from the Rules Docket at the location provided under the caption "ADDRESSES."
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Safety.
Adoption of the Amendment
Accordingly, pursuant to the authority delegated to me by the Administrator, the Federal Aviation Administration amends part 39 of the Federal Aviation Regulations (14 CFR part 39) as follows:
PART 39 - AIRWORTHINESS DIRECTIVES
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. App. 1354(a), 1421 and 1423; 49 U.S.C. 106(g); and 14 CFR 11.89.
§ 39.13 - [Amended]
2. Section 39.13 is amended by removing amendment 39-2094, and by adding a new airworthiness directive (AD), amendment 39-9050, to read as follows:
REGULATORY TEXT:
94-22-01 MCDONNELL DOUGLAS: Amendment 39-9050. Docket 94-NM-22-AD. Supersedes AD 75-04-11, Amendment 39-2094.
Applicability: Model DC-10-10, -10F, -30, -30F, and -15 series airplanes, and Model KC-10A (military) airplanes, on which the number 2 engine is a General Electric Model CF6 series turbofan engine having one or more gundrilled fan blades installed, including but not limited to part numbers 9010M33 and 9137M39; certificated in any category.
Compliance: Required as indicated, unless accomplished previously.
To prevent possible damage to the number 2 engine due to ingestion of ice and snow, accomplish the following:
(a) As of the effective date of this AD, prior to starting the number 2 engine on any airplane that has been parked during icing conditions (freezing rain, snow, sleet) for any period of time during which ice or snow may have accumulated on the airplane in the area of the number 2 engine, inspect to detect ice and snow accumulation on top of the fuselage and in the inlet of the number 2 engine. If ice or snow accumulation is found, prior to further flight, remove the ice or snow accumulation.
NOTE 1: Guidelines for inspection and safeguarding the aircraft are contained in these documents:
Douglas All Operators Letter (AOL) 10-546, dated January 11, 1974
Douglas AOL 10-673, dated August 7, 1974
DC-10 Airplane Maintenance Manual, Chapter 12-31-01
(b) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Los Angeles Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Los Angeles ACO.
NOTE 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Los Angeles ACO.
(c) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished.
(d) This amendment becomes effective on November 28, 1994.
FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_94-22-01.html
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Print/Save as PDF
Document Versions
Feedback
Details
AD Number:
94-22-01
Document Type:
AD Final Rules
Docket Number:
94-NM-22-AD
Subject Heading:
Airworthiness Directives; McDonnell Douglas Model DC-10-10, -10F, -30, -30F, and -15 Series Airplane...Show more
Subject:
Ingestion Of Ice Or Snow
Status:
Current
Citation:
(Federal Register: October 27, 1994 (Volume 59, Number 207))
Citation Publish Date:
10/27/1994
Effective Date:
11/28/1994
Make:
The Boeing Company
Model:
DC-10-10 | DC-10-10F | DC-10-15 | DC-10-30 | DC-10-30F (KC-10A, KDC-10)
Product Type:
Aircraft
Product Subtype:
Large Airplane
Affected AD:
Superseded AD:
75-04-11
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39 (59 FR 53931 NO. 207 10/27/94)
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 94-22-01
CITATION: [Federal Register: October 27, 1994 (Volume 59, Number 207)]
PAGE NUMBER: [Page 53931]
DOCKET NUMBER: 94-NM-22-AD
AMENDMENT: 39-9050
AD NUMBER: 94-22-01
SUBJECT HEADING: Airworthiness Directives; McDonnell Douglas Model DC-10-10, -10F, -30, -30F, and -15 Series Airplanes and Model KC-10A (Military) Airplanes
ACTION: Final rule.
SUMMARY: This amendment supersedes an existing airworthiness directive (AD), applicable to all McDonnell Douglas Model DC-10-10, -10F, -30, and -30F series airplanes, that currently requires inspections to detect ice or snow accumulation on top of the fuselage and in the inlet of the number 2 engine, and removal of ice and snow accumulation. This amendment adds certain airplanes to the applicability of the rule and limits the inspection requirement to only a certain group of airplanes. This amendment is prompted by the development of improved fan blades on certain engines and the identification of additional airplanes that are subject to the unsafe condition. The actions specified by this AD are intended to minimize damage to the number 2 engine due to ingestion of ice and snow.
DATES: EFFECTIVE DATE: November 28, 1994
ADDRESSES: Information related to this rule may be examined at the Federal Aviation Administration (FAA), Transport Airplane Directorate, Rules Docket, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, Transport Airplane Directorate, Los Angeles Aircraft Certification Office, 3229 East Spring Street, Long Beach, California.
FOR FURTHER INFORMATION CONTACT: Raymond Vakili, Aerospace Engineer, Propulsion Branch, ANM-141L, FAA, Transport Airplane Directorate, Los Angeles Aircraft Certification Office, 3229 East Spring Street, Long Beach, California 90806-2425; telephone (310) 988-5262; fax (310) 988-5210.
SUPPLEMENTARY INFORMATION: A proposal to amend part 39 of the Federal Aviation Regulations (14 CFR part 39) by superseding AD 75-04-11, amendment 39-2094, which is applicable to all McDonnell Douglas Model DC-10-10, -10F, -30, and -30F series airplanes, was published in the Federal Register on July 18, 1994 (59 FR 36375). The action proposed to supersede AD 75-04-11, which currently requires inspections to detect ice and snow accumulation on top of the fuselage and in the inlet of the number 2 engine, and removal of ice and snow. The action proposed to add Model DC-10-15 series airplanes to the applicability of the rule, and to limit the inspection requirement to only a certain group of airplanes.
Interested persons have been afforded an opportunity to participate in the making of this amendment. Due consideration has been given to the single comment received.
The commenter supports the proposed rule.
After careful review of the available data, including the comment noted above, the FAA has determined that air safety and the public interest require the adoption of the rule as proposed.
There are approximately 379 McDonnell Douglas Model DC-10-10, -10F, -30, -30F, and -15 series airplanes and Model KC-10A (military) airplanes of the affected design in the worldwide fleet. The FAA estimates that 226 airplanes of U.S. registry will be affected by this AD. (Currently, there are no Model DC-10-15 series airplanes of U.S. registry that will be affected by this AD.)
The inspections that were previously required by AD 75-04-11, and retained in this AD take approximately 1 work hour per airplane to accomplish the required actions, and that the average labor rate is $55 per work hour. Based on these figures, the total cost impact of the inspection requirement on U.S. operators is estimated to be $12,430, or $55 per airplane, per inspection. This AD will only add the cost of inspections for the operators of Model KC-10A (military) airplanes.
For operators of Model DC-10-10, -10F, -30, and -30F series airplanes having all solid fan blades in the number 2 engine position, the economic burden will be reduced since the previous requirement to inspect these airplanes in accordance with the existing AD will be eliminated by this AD. However, this does not relieve operators of the responsibility to comply with the requirements of sections 91.527 ("Operating in icing conditions") and 121.629 ("Operation in icing conditions"--air carriers) of the Federal Aviation Regulations (14 CFR 91.527 and 121.629).
The total cost impact figure discussed above is based on assumptions that no operator has yet accomplished any of the requirements of this AD action, and that no operator would accomplish those actions in the future if this AD were not adopted.
The regulations adopted herein will not have substantial direct effects on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. Therefore, in accordance with Executive Order 12612, it is determined that this final rule does not have sufficient federalism implications to warrant the preparation of a Federalism Assessment.
For the reasons discussed above, I certify that this action (1) is not a "significant regulatory action" under Executive Order 12866; (2) is not a "significant rule" under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and (3) will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. A final evaluation has been prepared for this action and it is contained in the Rules Docket. A copy of it may be obtained from the Rules Docket at the location provided under the caption "ADDRESSES."
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Safety.
Adoption of the Amendment
Accordingly, pursuant to the authority delegated to me by the Administrator, the Federal Aviation Administration amends part 39 of the Federal Aviation Regulations (14 CFR part 39) as follows:
PART 39 - AIRWORTHINESS DIRECTIVES
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. App. 1354(a), 1421 and 1423; 49 U.S.C. 106(g); and 14 CFR 11.89.
§ 39.13 - [Amended]
2. Section 39.13 is amended by removing amendment 39-2094, and by adding a new airworthiness directive (AD), amendment 39-9050, to read as follows:
REGULATORY TEXT:
94-22-01 MCDONNELL DOUGLAS: Amendment 39-9050. Docket 94-NM-22-AD. Supersedes AD 75-04-11, Amendment 39-2094.
Applicability: Model DC-10-10, -10F, -30, -30F, and -15 series airplanes, and Model KC-10A (military) airplanes, on which the number 2 engine is a General Electric Model CF6 series turbofan engine having one or more gundrilled fan blades installed, including but not limited to part numbers 9010M33 and 9137M39; certificated in any category.
Compliance: Required as indicated, unless accomplished previously.
To prevent possible damage to the number 2 engine due to ingestion of ice and snow, accomplish the following:
(a) As of the effective date of this AD, prior to starting the number 2 engine on any airplane that has been parked during icing conditions (freezing rain, snow, sleet) for any period of time during which ice or snow may have accumulated on the airplane in the area of the number 2 engine, inspect to detect ice and snow accumulation on top of the fuselage and in the inlet of the number 2 engine. If ice or snow accumulation is found, prior to further flight, remove the ice or snow accumulation.
NOTE 1: Guidelines for inspection and safeguarding the aircraft are contained in these documents:
Douglas All Operators Letter (AOL) 10-546, dated January 11, 1974
Douglas AOL 10-673, dated August 7, 1974
DC-10 Airplane Maintenance Manual, Chapter 12-31-01
(b) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Los Angeles Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Los Angeles ACO.
NOTE 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Los Angeles ACO.
(c) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished.
(d) This amendment becomes effective on November 28, 1994.
FOOTER:
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Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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