AD 67-15-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Maryland Air Industries, Inc. | F-27 | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27A | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27B | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27F | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27G | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27J | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | F-27M | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | FH-227 | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | FH-227B | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | FH-227C | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | FH-227D | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
| aircraft | Maryland Air Industries, Inc. | FH-227E | Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes |
Unsafe Condition
Loss of electrical power to flight instruments due to a single ground fault in the d.c. power system, violating former CAR 4b.603(e), (f), (g) (effective December 31, 1953).
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Modify the emergency electrical power system to the attitude indicator, turn and bank indicator, and gyroscopic direction indicator to ensure power is not derived solely from the d.c. power system. Use Allegheny Airlines Engineering Order 67-81F or later FAA-approved revision, or an FAA-approved equivalent.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 200 hours' time in service after the effective date of this AD unless already accomplished
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Fairchild-Hiller Model F-27 (F-27, F-27A, F-27B, F-27F, F-27G, F-27J, F-27M) and FH-227 Series (FH-227, FH-227B, FH-227C, FH-227D, FH-227E) airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Electrical System Modification
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_67-15-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 67-15-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes Subject: Electrical System Modification Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 05/06/1967 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: 67-15-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-407 AD NUMBER: 67-15-02 SUBJECT HEADING: Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes ACTION: SUMMARY: DATES: Effective May 6, 1967. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 67-15-02 FAIRCHILD-HILLER: Amdt. 39-407 Part 39 Federal Register May 6, 1967. Applies to Model F-27 and FH-227 Series Airplanes. Compliance required within the next 200 hours' time in service after the effective date of this AD unless already accomplished. To compensate for the loss of electrical power to the flight instruments required by former CAR 4b.603(e), (f), (g) (effective December 31, 1953) in the event of a single ground fault in the d.c. power system, accomplish the following: (a) In aircraft, where the emergency electrical power to operate attitude indicator, turn and bank indicator and gyroscopic direction indicator is derived from the d.c. power system, modify the emergency electrical power system to these instruments in accordance with Allegheny Airlines Engineering Order 67-81F or later FAA-approved revision, or an FAA-approved equivalent approved by the Chief, Engineering and Manufacturing Branch, Eastern Region. (b) Upon request and submission of substantiating data, an FAA maintenance inspector may adjust the compliance time specified in this AD to permit compliance at an established inspection period. This directive effective May 6, 1967. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_67-15-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 67-15-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes Subject: Electrical System Modification Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 05/06/1967 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: 67-15-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-407 AD NUMBER: 67-15-02 SUBJECT HEADING: Airworthiness Directives; Fairchild-Hiller Model F-27 and FH-227 Series Airplanes ACTION: SUMMARY: DATES: Effective May 6, 1967. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 67-15-02 FAIRCHILD-HILLER: Amdt. 39-407 Part 39 Federal Register May 6, 1967. Applies to Model F-27 and FH-227 Series Airplanes. Compliance required within the next 200 hours' time in service after the effective date of this AD unless already accomplished. To compensate for the loss of electrical power to the flight instruments required by former CAR 4b.603(e), (f), (g) (effective December 31, 1953) in the event of a single ground fault in the d.c. power system, accomplish the following: (a) In aircraft, where the emergency electrical power to operate attitude indicator, turn and bank indicator and gyroscopic direction indicator is derived from the d.c. power system, modify the emergency electrical power system to these instruments in accordance with Allegheny Airlines Engineering Order 67-81F or later FAA-approved revision, or an FAA-approved equivalent approved by the Chief, Engineering and Manufacturing Branch, Eastern Region. (b) Upon request and submission of substantiating data, an FAA maintenance inspector may adjust the compliance time specified in this AD to permit compliance at an established inspection period. This directive effective May 6, 1967. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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