AD 69-20-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Maryland Air Industries, Inc. | F-27 | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27A | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27B | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27F | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27G | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27J | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27M | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Airplanes |
| aircraft | Maryland Air Industries, Inc. | FH-227 | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Airplanes |
| aircraft | Maryland Air Industries, Inc. | FH-227B | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Airplanes |
| aircraft | Maryland Air Industries, Inc. | FH-227C | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Airplanes |
| aircraft | Maryland Air Industries, Inc. | FH-227D | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Airplanes |
| aircraft | Maryland Air Industries, Inc. | FH-227E | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Airplanes |
Unsafe Condition
The rear passenger door spindle (P/N 27-313006-3, -5, -7, or -9) may fail to provide positive retention of the door locking mechanism, leading to potential door failure during flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect and modify the door locking mechanism by complying with specified service bulletins: F-27-52-27 (Revision 1) with F-27-52-19 for F-27 airplanes with P/N 27-313006-3; F-27-52-27 (Revision 1) and F-27-52-19 for F-27 with other spindles; FH-227-52-13 for FH-227 airplanes. Equivalent FAA-approved alterations are acceptable.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 100 hours' time in service after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Fairchild-Hiller Model F-27 (all variants) and FH-227 (all variants) airplanes with rear passenger door spindle P/N 27-313006-3, -5, -7, or -9
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Door Locking Mechanism
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_69-20-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 69-20-04 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Airplanes Subject: Door Locking Mechanism Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/03/1969 Make: Maryland Air Industries, Inc. Model: F-27 | F-27A | F-27B | F-27F | F-27G | F-27J | F-27M | FH-227 | FH-227B | FH-227C | FH-227D | FH-227E 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: 69-20-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-849 AD NUMBER: 69-20-04 SUBJECT HEADING: Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Airplanes ACTION: SUMMARY: DATES: Effective November 3, 1969. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 69-20-04 FAIRCHILD-HILLER: Amdt. 39-849. Applies to F-27 and FH-227 type airplanes certificated in all categories and incorporating rear passenger door spindle, P/N 27-313006-3, -5, -7, or -9. Compliance required within the next 100 hours' time in service after the effective date of this AD, unless already accomplished. To provide a more positive retention of the passenger door locking mechanism accomplish the following: (a) For F-27 type airplanes with spindle, P/N 27-313006-3, installed in the door lock mechanism, comply with Section D(1) through D(8) of Revision 1 of Fairchild Hiller Service Bulletin No. F-27-52-27 dated June 17, 1969. In place of Step "D(5)", rig the door mechanism in accordance with Fairchild Hiller Service Bulletin No. F-27-52-19, dated June 17, 1969. (b) For F-27 type airplanes with spindle, P/N 27-313006-5, 27-313006-7, or 27-313006-9, installed in the door lock mechanism, comply with Section E(1) through E(8) of Revision 1- of Fairchild Hiller Service Bulletin No. F-27-52-27, dated June 17, 1969. Rig the door mechanism in accordance with Fairchild Hiller Service Bulletin No. F-27-52-19, dated June 17, 1969. (c) For FH-227 type airplanes with spindle, P/N 27-313006-5, 27-313006-7, or 27-313006-9, installed in the door lock mechanism, comply with the "Accomplishment Instructions" of Fairchild Hiller Service Bulletin No. FH-227-52-13, dated June 17, 1969. (d) An equivalent alteration approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region may be used in lieu of the foregoing methods. (e) Upon request with substantiating data submitted through an FAA maintenance inspector, the compliance time specified in this AD may be increased by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. This amendment effective November 3, 1969. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_69-20-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 69-20-04 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Airplanes Subject: Door Locking Mechanism Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/03/1969 Make: Maryland Air Industries, Inc. Model: F-27 | F-27A | F-27B | F-27F | F-27G | F-27J | F-27M | FH-227 | FH-227B | FH-227C | FH-227D | FH-227E 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: 69-20-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-849 AD NUMBER: 69-20-04 SUBJECT HEADING: Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Airplanes ACTION: SUMMARY: DATES: Effective November 3, 1969. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 69-20-04 FAIRCHILD-HILLER: Amdt. 39-849. Applies to F-27 and FH-227 type airplanes certificated in all categories and incorporating rear passenger door spindle, P/N 27-313006-3, -5, -7, or -9. Compliance required within the next 100 hours' time in service after the effective date of this AD, unless already accomplished. To provide a more positive retention of the passenger door locking mechanism accomplish the following: (a) For F-27 type airplanes with spindle, P/N 27-313006-3, installed in the door lock mechanism, comply with Section D(1) through D(8) of Revision 1 of Fairchild Hiller Service Bulletin No. F-27-52-27 dated June 17, 1969. In place of Step "D(5)", rig the door mechanism in accordance with Fairchild Hiller Service Bulletin No. F-27-52-19, dated June 17, 1969. (b) For F-27 type airplanes with spindle, P/N 27-313006-5, 27-313006-7, or 27-313006-9, installed in the door lock mechanism, comply with Section E(1) through E(8) of Revision 1- of Fairchild Hiller Service Bulletin No. F-27-52-27, dated June 17, 1969. Rig the door mechanism in accordance with Fairchild Hiller Service Bulletin No. F-27-52-19, dated June 17, 1969. (c) For FH-227 type airplanes with spindle, P/N 27-313006-5, 27-313006-7, or 27-313006-9, installed in the door lock mechanism, comply with the "Accomplishment Instructions" of Fairchild Hiller Service Bulletin No. FH-227-52-13, dated June 17, 1969. (d) An equivalent alteration approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region may be used in lieu of the foregoing methods. (e) Upon request with substantiating data submitted through an FAA maintenance inspector, the compliance time specified in this AD may be increased by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region. This amendment effective November 3, 1969. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.
Related Airworthiness Directives
2008-22-02
final ruleAirworthiness Directives; Maryland Air Industries, Inc., Model Fairchild F-27 and FH-227 Series Airplanes
Unsafe Condition: Potential unsafe conditions on Model Fairchild F-27 and FH-227 series airplanes identified through fuel system safety reviews in accordance with SFAR 88, which could result in ignition sources insi...
2004-22-01
final ruleAirworthiness Directives; Various Transport Category Airplanes on Which Cargo Restraint Strap Assemblies Have Been Installed per Supplemental Type Certificate (STC) ST01004NY
Unsafe Condition: Shifting or unrestrained cargo in the cargo compartment, which could cause an unexpected change in the airplane's center of gravity, damage to the airplane structure and/or flight control system, a...
99-19-09
final ruleAirworthiness Directives; Fairchild Model F-27 and FH-227 Series Airplanes
Unsafe Condition: Reduced controllability of the aircraft due to adverse aerodynamic effects of ice adhering to the airplane prior to the first deicing cycle, as a result of flightcrews not activating pneumatic wing...
98-04-31
final ruleAirworthiness Directives; Fairchild Model F27 and FH227 Series Airplanes
Unsafe Condition: Operating the airplane in severe icing conditions outside the certification envelope may lead to potential hazards due to inadequate flight crew information on recognizing and exiting such conditions.