AD 81-24-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Gulfstream Aerospace Corporation | G-1159 | Airworthiness Directives; GULFSTREAM AMERICAN CORPORATION Model G-1159 and G-1159A |
| aircraft | Gulfstream Aerospace Corporation | G-1159A | Airworthiness Directives; GULFSTREAM AMERICAN CORPORATION Model G-1159 and G-1159A |
Unsafe Condition
Loss of fluid flow in the auxiliary hydraulic system following a complete loss of fluid in the combined hydraulic system.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install a check valve in the reservoir system in accordance with Gulfstream American Aircraft Service Change No. 295 (for Model G-1159) and ASC No. 21 (for Model G-1159A). An equivalent method of compliance may be approved.
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Compliance Time
within the next 75 hours time in service after the effective date of this AD
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Affected Aircraft
Gulfstream American Corporation Model G-1159 (Serial Numbers 1 through 248, 250, 251, 253 through 258 and 775) and Model G-1159A (Serial Numbers 249, 252, 300 through 338 and 875)
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Federal Register Abstract
Hydraulic System Fluid Flow
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_81-24-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 81-24-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; GULFSTREAM AMERICAN CORPORATION Model G-1159 and G-1159A Subject: Hydraulic System Fluid Flow Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/23/1981 Make: Gulfstream Aerospace Corporation Model: G-1159 | G-1159A Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 81-24-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4259 AD NUMBER: 81-24-02 SUBJECT HEADING: Airworthiness Directives; GULFSTREAM AMERICAN CORPORATION Model G-1159 and G-1159A ACTION: SUMMARY: DATES: Effective November 23, 1981. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 81-24-02 GULFSTREAM AMERICAN CORPORATION (GRUMMAN AMERICAN AVIATION CORPORATION): Amendment 39-4259. Applies to Model G-1159 Serial Numbers 1 through 248, 250, 251, 253 through 258 and 775; Model G-1159A Serial Numbers 249, 252, 300 through 338 and 875. Compliance required within the next 75 hours time in service after the effective date of this AD, unless already accomplished. To prevent the loss of fluid flow in the auxiliary hydraulic system following a complete loss of fluid in the combined hydraulic system, install a check valve in the reservoir system in accordance with Gulfstream American Aircraft Service Change (ASC) No. 295 (for the Model G-1159) and ASC No. 21 (for the Model G-1159A), both dated September 1, 1981. An equivalent method of compliance may be approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Southern Region. This amendment becomes effective November 23, 1981. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_81-24-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 81-24-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; GULFSTREAM AMERICAN CORPORATION Model G-1159 and G-1159A Subject: Hydraulic System Fluid Flow Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 11/23/1981 Make: Gulfstream Aerospace Corporation Model: G-1159 | G-1159A 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: 81-24-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-4259 AD NUMBER: 81-24-02 SUBJECT HEADING: Airworthiness Directives; GULFSTREAM AMERICAN CORPORATION Model G-1159 and G-1159A ACTION: SUMMARY: DATES: Effective November 23, 1981. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 81-24-02 GULFSTREAM AMERICAN CORPORATION (GRUMMAN AMERICAN AVIATION CORPORATION): Amendment 39-4259. Applies to Model G-1159 Serial Numbers 1 through 248, 250, 251, 253 through 258 and 775; Model G-1159A Serial Numbers 249, 252, 300 through 338 and 875. Compliance required within the next 75 hours time in service after the effective date of this AD, unless already accomplished. To prevent the loss of fluid flow in the auxiliary hydraulic system following a complete loss of fluid in the combined hydraulic system, install a check valve in the reservoir system in accordance with Gulfstream American Aircraft Service Change (ASC) No. 295 (for the Model G-1159) and ASC No. 21 (for the Model G-1159A), both dated September 1, 1981. An equivalent method of compliance may be approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, Southern Region. This amendment becomes effective November 23, 1981. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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