AD 93-14-02
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Fokker | F28 0100 | Airworthiness Directives; FOKKER Model F28 Mark 0100 Series Airplanes |
Unsafe Condition
Erroneous lateral guidance from the automatic flight control and augmentation system (AFCAS) when a go-around is initiated below 100 feet during a flight director (FD) or non-redundant autopilot approach.
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Required Actions
Amend AFM Section 2.08.01 to include specified weather limitations and FD usage restrictions within 14 days after the effective date. Install improved AFCAS software (version V13S) via Fokker Service Bulletin SBF100-22-037 to terminate AFM amendment requirements. Alternative methods may be approved by the FAA.
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Compliance Time
Within 14 days after the effective date of this AD
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Affected Aircraft
FOKKER Model F28 Mark 0100 series airplanes; serial numbers 11244 through 11463, inclusive; certificated in any category.
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Federal Register Abstract
AFM Limitations
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_93-14-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 93-14-02 Document Type: AD Final Rules Docket Number: 93-NM-93-AD Subject Heading: Airworthiness Directives; FOKKER Model F28 Mark 0100 Series Airplanes Subject: AFM Limitations Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/02/1993 Make: Model: F.28 Mark 0100 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 93-14-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 93-NM-93-AD AMENDMENT: 39-8626 AD NUMBER: 93-14-02 SUBJECT HEADING: Airworthiness Directives; FOKKER Model F28 Mark 0100 Series Airplanes ACTION: SUMMARY: DATES: Effective August 2, 1993. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 93-14-02 FOKKER: Amendment 39-8626. Docket 93-NM-93-AD. Applicability: Model F28 Mark 0100 series airplanes; serial numbers 11244 through 11463, inclusive; certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent erroneous lateral guidance from the automatic flight control and augmentation system (AFCAS) when a go-around is initiated below 100 feet, during a flight director (FD) or non-redundant autopilot approach, accomplish the following: (a) Within 14 days after the effective date of this AD, amend Section 2.08.01, AFCAS LIMITATIONS, subsection Instrument Landing System (ILS) APPROACH, of the FAA-approved Airplane Flight Manual (AFM) to include the following statements. This may be accomplished by inserting a copy of this AD in the AFM. (1) Change Minimum Decision Height: "Weather Limitations: CAT II - FMA: GS/LOC - Minimum Decision Height (DH): 150 feet - Runway Visual Range (RVR): 400 meters/1,200 feet NOTE 1: CAT III (LAND 2 and LAND 3) weather limitations remain unchanged." (2) Change Minimum Use Height with GS/LOC annunciated. "Minimum use height: - If the surface wind exceeds 40 knots: 150 feet - If not: - With GS/LOC annunciated: 150 feet - With LAND 2 or LAND 3 annunciated: 0 feet" (3) Add the following limitation under ILS APPROACH: "USE OF FLIGHT DIRECTOR DURING ILS APPROACH When GS/LOC is annunciated on FMA, both FD's may not be used below 150 feet and must be switched OFF passing 150 feet." (b) Installation of improved AFCAS software, version V13S, in the flight control computers (FCC) in accordance with Fokker Service Bulletin SBF100-22-037, dated May 31, 1993, constitutes terminating action for the requirements of paragraph (a) of this AD. After this installation has been accomplished, the AFM limitations required by paragraph (a) may be removed. (c) 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, Standardization Branch, ANM-113, 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, Standardization Branch, ANM-113. NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Standardization Branch, ANM-113. (d) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished. (e) The installation shall be done in accordance with Fokker Service Bulletin SBF100-22-037, dated May 31, 1993. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from Fokker Aircraft USA, Inc., 1199 North Fairfax Street, Alexandria, Virginia 22314. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. (f) This amendment becomes effective on August 2, 1993. FOOTER:
Document Text
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AD Final Rules - DRS_93-14-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 93-14-02 Document Type: AD Final Rules Docket Number: 93-NM-93-AD Subject Heading: Airworthiness Directives; FOKKER Model F28 Mark 0100 Series Airplanes Subject: AFM Limitations Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/02/1993 Make: Model: F.28 Mark 0100 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: 93-14-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 93-NM-93-AD AMENDMENT: 39-8626 AD NUMBER: 93-14-02 SUBJECT HEADING: Airworthiness Directives; FOKKER Model F28 Mark 0100 Series Airplanes ACTION: SUMMARY: DATES: Effective August 2, 1993. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 93-14-02 FOKKER: Amendment 39-8626. Docket 93-NM-93-AD. Applicability: Model F28 Mark 0100 series airplanes; serial numbers 11244 through 11463, inclusive; certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent erroneous lateral guidance from the automatic flight control and augmentation system (AFCAS) when a go-around is initiated below 100 feet, during a flight director (FD) or non-redundant autopilot approach, accomplish the following: (a) Within 14 days after the effective date of this AD, amend Section 2.08.01, AFCAS LIMITATIONS, subsection Instrument Landing System (ILS) APPROACH, of the FAA-approved Airplane Flight Manual (AFM) to include the following statements. This may be accomplished by inserting a copy of this AD in the AFM. (1) Change Minimum Decision Height: "Weather Limitations: CAT II - FMA: GS/LOC - Minimum Decision Height (DH): 150 feet - Runway Visual Range (RVR): 400 meters/1,200 feet NOTE 1: CAT III (LAND 2 and LAND 3) weather limitations remain unchanged." (2) Change Minimum Use Height with GS/LOC annunciated. "Minimum use height: - If the surface wind exceeds 40 knots: 150 feet - If not: - With GS/LOC annunciated: 150 feet - With LAND 2 or LAND 3 annunciated: 0 feet" (3) Add the following limitation under ILS APPROACH: "USE OF FLIGHT DIRECTOR DURING ILS APPROACH When GS/LOC is annunciated on FMA, both FD's may not be used below 150 feet and must be switched OFF passing 150 feet." (b) Installation of improved AFCAS software, version V13S, in the flight control computers (FCC) in accordance with Fokker Service Bulletin SBF100-22-037, dated May 31, 1993, constitutes terminating action for the requirements of paragraph (a) of this AD. After this installation has been accomplished, the AFM limitations required by paragraph (a) may be removed. (c) 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, Standardization Branch, ANM-113, 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, Standardization Branch, ANM-113. NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Standardization Branch, ANM-113. (d) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished. (e) The installation shall be done in accordance with Fokker Service Bulletin SBF100-22-037, dated May 31, 1993. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from Fokker Aircraft USA, Inc., 1199 North Fairfax Street, Alexandria, Virginia 22314. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. (f) This amendment becomes effective on August 2, 1993. FOOTER:
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Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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