AD 88-12-51 R1

final rule

Airworthiness Directives; Boeing Model DHC-8-100 Series Airplanes

AD Number
88-12-51 R1
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.
Technical illustration of an aircraft propeller assembly
Problem area Propeller

Applicability

TypeManufacturerModelDetails
aircraft Bombardier Inc. DHC-8-101 Airworthiness Directives; Boeing Model DHC-8-100 Series Airplanes
aircraft Bombardier Inc. DHC-8-102 Airworthiness Directives; Boeing Model DHC-8-100 Series Airplanes
aircraft Bombardier Inc. DHC-8-103 Airworthiness Directives; Boeing Model DHC-8-100 Series Airplanes
aircraft Bombardier Inc. DHC-8-106 Airworthiness Directives; Boeing Model DHC-8-100 Series Airplanes

Unsafe Condition

Inadvertent unfeathering of the propeller during engine shutdown or fire procedures after V1 could occur.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Insert a note in the AFM's Emergency Operating Procedures Section to delay engine shutdown checks until the third segment of the takeoff path, and complete the checks sequentially and uninterrupted. Alternatively, install the propeller autofeather latching logic wiring modification per Service Bulletin 8-61-12, Rev A, to remove the AFM note requirement.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Within 24 hours after the effective date of this AD

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

Boeing Model DHC-8-100 series airplanes, Serial Numbers 1 through 113

AI-generated summary from the source AD text. Verify against the official source before acting.

Federal Register Abstract

AFM Changes -- Engine Shutdown

Applicability Source Text

Show captured applicability text from the source AD
AD Final Rules - DRS_88-12-51_R.html
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AD Number:
88-12-51 R1
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Boeing Model DHC-8-100 Series Airplanes
Subject:
AFM Changes -- Engine Shutdown
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
12/12/1988
Make:
Bombardier Inc.
Model:
DHC-8-101 | DHC-8-102 | DHC-8-103 | DHC-8-106
Product Type:
Aircraft
Product Subtype:
Large Airplane
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 88-12-51 R1
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-6076

AD NUMBER:   88-12-51 R1

SUBJECT HEADING:   Airworthiness Directives; Boeing Model DHC-8-100 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective December 12, 1988

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
88-12-51 R1 BOEING OF CANADA, LTD., DE HAVILLAND DIVISION: Amendment 39- 6076. Final copy of, and revision to, Telegraphic AD 88-12-51 issued June 10, 1988.

Applies to Model DHC-8-100 series airplanes, Serial Numbers 1 through 113, certificated in any category.

Compliance required as indicated, unless previously accomplished.

To prevent inadvertent unfeathering of the propeller, accomplish the following:

A. Within 24 hours after the effective date of this AD, insert the following note into the Emergency Operating Procedures Section of the Airplane Flight Manual (AFM) [PSM-1-81- 1A(FAA)], and alert all flight crews. This may be accomplished by inserting a copy of this airworthiness directive into the front of the Emergency Operating Procedures Section (Section 4) of the AFM:

"NOTE: Should an engine failure or fire after V1 occur: Ensure that the emergency procedures of paragraphs 4.1.2., 4.2.1., and 4.2.2 of PSM 1-81-1A(FAA) are followed. The ENGINE SHUTDOWN check, paragraph 4.2.1., is not to be commenced until entering the third segment of the takeoff path. On commencement of the ENGINE SHUTDOWN or ENGINE FIRE (IN FLIGHT) check, paragraph 4.2.1. or 4.2.2, respectively, the check should be completed sequentially and uninterrupted to its conclusion."

B. Installation of the modification to the propellers-autofeather latching logic wiring, in accordance with de Havilland Service Bulletin 8-61-12, Revision A, dated October 28, 1988, constitutes terminating action for the requirements of paragraph A., above, and the required "NOTE" may be removed from the AFM.

C. An alternate means of compliance which provides an acceptable level of safety may be used when approved by the Manager, New York Aircraft Certification Office, FAA, New England Region.

All persons affected by this directive who have not already received the appropriate service information from the manufacturer, may obtain copies upon request to Boeing of Canada, Ltd., de Havilland Division, Garrett Boulevard, Downsview, Ontario M3K 1Y5, Canada. This information may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or at FAA, New England Region, New York Aircraft Certification Office, 181 South Franklin Avenue, Room 202, Valley Stream, New York.

This amendment revises Telegraphic AD T88-12-51, issued June 10, 1988.

This amendment, 39-6076 (AD 88-12-51 R1), becomes effective December 12, 1988.

FOOTER:

Document Text

Show stored source text (verify against official source)
AD Final Rules - DRS_88-12-51_R.html
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Details
AD Number:
88-12-51 R1
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; Boeing Model DHC-8-100 Series Airplanes
Subject:
AFM Changes -- Engine Shutdown
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
12/12/1988
Make:
Bombardier Inc.
Model:
DHC-8-101 | DHC-8-102 | DHC-8-103 | DHC-8-106
Product Type:
Aircraft
Product Subtype:
Large Airplane
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 88-12-51 R1
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-6076

AD NUMBER:   88-12-51 R1

SUBJECT HEADING:   Airworthiness Directives; Boeing Model DHC-8-100 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective December 12, 1988

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
88-12-51 R1 BOEING OF CANADA, LTD., DE HAVILLAND DIVISION: Amendment 39- 6076. Final copy of, and revision to, Telegraphic AD 88-12-51 issued June 10, 1988.

Applies to Model DHC-8-100 series airplanes, Serial Numbers 1 through 113, certificated in any category.

Compliance required as indicated, unless previously accomplished.

To prevent inadvertent unfeathering of the propeller, accomplish the following:

A. Within 24 hours after the effective date of this AD, insert the following note into the Emergency Operating Procedures Section of the Airplane Flight Manual (AFM) [PSM-1-81- 1A(FAA)], and alert all flight crews. This may be accomplished by inserting a copy of this airworthiness directive into the front of the Emergency Operating Procedures Section (Section 4) of the AFM:

"NOTE: Should an engine failure or fire after V1 occur: Ensure that the emergency procedures of paragraphs 4.1.2., 4.2.1., and 4.2.2 of PSM 1-81-1A(FAA) are followed. The ENGINE SHUTDOWN check, paragraph 4.2.1., is not to be commenced until entering the third segment of the takeoff path. On commencement of the ENGINE SHUTDOWN or ENGINE FIRE (IN FLIGHT) check, paragraph 4.2.1. or 4.2.2, respectively, the check should be completed sequentially and uninterrupted to its conclusion."

B. Installation of the modification to the propellers-autofeather latching logic wiring, in accordance with de Havilland Service Bulletin 8-61-12, Revision A, dated October 28, 1988, constitutes terminating action for the requirements of paragraph A., above, and the required "NOTE" may be removed from the AFM.

C. An alternate means of compliance which provides an acceptable level of safety may be used when approved by the Manager, New York Aircraft Certification Office, FAA, New England Region.

All persons affected by this directive who have not already received the appropriate service information from the manufacturer, may obtain copies upon request to Boeing of Canada, Ltd., de Havilland Division, Garrett Boulevard, Downsview, Ontario M3K 1Y5, Canada. This information may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or at FAA, New England Region, New York Aircraft Certification Office, 181 South Franklin Avenue, Room 202, Valley Stream, New York.

This amendment revises Telegraphic AD T88-12-51, issued June 10, 1988.

This amendment, 39-6076 (AD 88-12-51 R1), becomes effective December 12, 1988.

FOOTER:

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

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