AD 77-06-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Mooney Aviation Company Inc | M20J | Airworthiness Directives; Mooney Model M20J Airplanes |
Unsafe Condition
False altitude, airspeed, and vertical speed indications presented to the pilot due to contamination or malfunction of the alternate static source valve (Gerdes P/N A-1390).
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Required Actions
Disassemble, clean, lubricate, and reassemble the alternate static source valve (Gerdes P/N A-1390), and leak test the static system in accordance with Mooney Service Bulletin No. M20-197 or later approved revision.
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Compliance Time
Before further flight in instrument meteorological conditions, or night flight, or within the next 5 hours' day visual flight rules time in service after the effective date of this AD, unless already accomplished.
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Affected Aircraft
Mooney Model M20J airplanes with serial numbers 24-0001 through 24-0085, 24-0087, 24-0088, 24-0090 through 24-0095, 24-0097 through 24-0102.
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Federal Register Abstract
Instrument Conditions
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_77-06-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 77-06-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Mooney Model M20J Airplanes Subject: Instrument Conditions Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 03/18/1977 Make: Mooney Aviation Company Inc Model: M20J Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 77-06-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2851 AD NUMBER: 77-06-01 SUBJECT HEADING: Airworthiness Directives; Mooney Model M20J Airplanes ACTION: SUMMARY: DATES: Effective March 18, 1977. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 77-06-01 MOONEY AIRCRAFT CORPORATION: Amendment 39-2851. Applies to Model M20J airplanes S/N 24-0001 through 24-0085, 24-0087, 24-0088, 24-0090 through 24- 0095, 24-0097 through 24-0102. Compliance required before further flight in instrument meteorological conditions, or night flight, or within the next 5 hours' day visual flight rules time in service after the effective date of this AD, unless already accomplished. To prevent false altitude, airspeed and vertical speed indications from being presented to the pilot, accomplish the following: Disassemble, clean, lubricate, and reassemble the alternate static source valve, Gerdes P/N A-1390, and leak test the static system in accordance with Mooney Service Bulletin No. M20-197 dated February 28, 1977, or later approved revision. The manufacturer's Service Bulletin identified and described in this directive is incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received this Service Bulletin from the manufacturer may obtain a copy upon request to Manager, Engineering Administration and Technical Services, Mooney Aircraft Corporation, Kerrville, Texas 78028; Telephone No. 512-257-4043. This service bulletin may also be examined at the office of the Regional Counsel, Southwest Region, FAA, 4400 Blue Mound Road, Fort Worth, Texas and at FAA Headquarters, 800 Independence Avenue, S.W., Washington, D.C. A historical file on this AD, which includes the incorporated material in full, is maintained by the FAA at its headquarters in Washington, D.C., and at the Southwest Region Office in Fort Worth, Texas. This Amendment becomes effective on March 18, 1977. FOOTER:
Document Text
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AD Final Rules - DRS_77-06-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 77-06-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; Mooney Model M20J Airplanes Subject: Instrument Conditions Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 03/18/1977 Make: Mooney Aviation Company Inc Model: M20J Product Type: Aircraft Product Subtype: Small 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: 77-06-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2851 AD NUMBER: 77-06-01 SUBJECT HEADING: Airworthiness Directives; Mooney Model M20J Airplanes ACTION: SUMMARY: DATES: Effective March 18, 1977. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 77-06-01 MOONEY AIRCRAFT CORPORATION: Amendment 39-2851. Applies to Model M20J airplanes S/N 24-0001 through 24-0085, 24-0087, 24-0088, 24-0090 through 24- 0095, 24-0097 through 24-0102. Compliance required before further flight in instrument meteorological conditions, or night flight, or within the next 5 hours' day visual flight rules time in service after the effective date of this AD, unless already accomplished. To prevent false altitude, airspeed and vertical speed indications from being presented to the pilot, accomplish the following: Disassemble, clean, lubricate, and reassemble the alternate static source valve, Gerdes P/N A-1390, and leak test the static system in accordance with Mooney Service Bulletin No. M20-197 dated February 28, 1977, or later approved revision. The manufacturer's Service Bulletin identified and described in this directive is incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received this Service Bulletin from the manufacturer may obtain a copy upon request to Manager, Engineering Administration and Technical Services, Mooney Aircraft Corporation, Kerrville, Texas 78028; Telephone No. 512-257-4043. This service bulletin may also be examined at the office of the Regional Counsel, Southwest Region, FAA, 4400 Blue Mound Road, Fort Worth, Texas and at FAA Headquarters, 800 Independence Avenue, S.W., Washington, D.C. A historical file on this AD, which includes the incorporated material in full, is maintained by the FAA at its headquarters in Washington, D.C., and at the Southwest Region Office in Fort Worth, Texas. This Amendment becomes effective on March 18, 1977. FOOTER:
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Retrieved: Apr 8, 2026
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