AD 92-07-04
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | British Aerospace Regional Aircraft | H.P. 137 Jetstream Mk. 1 | Airworthiness Directives; BRITISH AEROSPACE HP 137 Mk1, Jetstream Models 200, 3101, and 3201 Airplanes |
| aircraft | British Aerospace Regional Aircraft | Jetstream 3201 | Airworthiness Directives; BRITISH AEROSPACE HP 137 Mk1, Jetstream Models 200, 3101, and 3201 Airplanes |
| aircraft | British Aerospace Regional Aircraft | Jetstream Series 200 | Airworthiness Directives; BRITISH AEROSPACE HP 137 Mk1, Jetstream Models 200, 3101, and 3201 Airplanes |
| aircraft | British Aerospace Regional Aircraft | Jetstream Series 3101 | Airworthiness Directives; BRITISH AEROSPACE HP 137 Mk1, Jetstream Models 200, 3101, and 3201 Airplanes |
Unsafe Condition
Landing gear or flap extension malfunction during operation of the emergency hydraulic system due to the detent ball catch and selector valve issues.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Modify the detent ball catch of the emergency gear and flap extension hydraulic system selector valve within 600 hours time-in-service after February 5, 1990. Subsequent modifications and torque checks must be done every 1,800 hours TIS, starting from either 1,600 hours TIS or 200 hours after April 30, 1992, whichever is later. Recondition the selector valve if excessive torque is found.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 600 hours time-in-service after February 5, 1990, and subsequent intervals not to exceed 1,800 hours TIS starting from the later of 1,600 hours TIS or 200 hours TIS after April 30, 1992.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
British Aerospace Regional Aircraft HP 137 Mk1, Jetstream Models 200, 3101, and 3201 (all serial numbers).
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Emergency Gear & Flap Exten. Sys
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_92-07-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 92-07-04 Document Type: AD Final Rules Docket Number: 91-CE-61-AD Subject Heading: Airworthiness Directives; BRITISH AEROSPACE HP 137 Mk1, Jetstream Models 200, 3101, and 3201 Airplanes Subject: Emergency Gear & Flap Exten. Sys Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 04/30/1992 Make: British Aerospace Regional Aircraft Model: H.P. 137 Jetstream Mk. 1 | Jetstream 3201 | Jetstream Series 200 | Jetstream Series 3101 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: 92-07-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 91-CE-61-AD AMENDMENT: 39-8200 AD NUMBER: 92-07-04 SUBJECT HEADING: Airworthiness Directives; BRITISH AEROSPACE HP 137 Mk1, Jetstream Models 200, 3101, and 3201 Airplanes ACTION: SUMMARY: DATES: Effective April 30, 1992. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 92-07-04 BRITISH AEROSPACE (BAe), REGIONAL AIRCRAFT LIMITED: Amendment 39-8200. Docket No. 91-CE-61-AD. Supersedes AD 90-02-14, Amendment 39- 6434. Applicability: HP 137 Mk1, Jetstream Models 200, 3101, and 3201 airplanes (all serial numbers), certificated in any category. Compliance: Required as indicated, unless already accomplished. To prevent landing gear or flap extension malfunction during operation of the emergency hydraulic system, accomplish the following: (a) Within the next 600 hours time-in-service (TIS) after February 5, 1990 (the effective date of AD 90-02-14, Amendment 39-6434), modify the detent ball catch of the emergency gear and flap extension hydraulic system selector valve in accordance with the instructions in BAe Alert Service Bulletin (SB) 29-A-JA881143, dated February 24, 1989. (b) Upon the accumulation of 1,600 hours TIS, or within the next 200 hours TIS after the effective date of this AD, whichever occurs later, and thereafter at intervals not to exceed 1,800 hours TIS, accomplish the following: (1) Modify the emergency gear and flap extension hydraulic system valve in accordance with paragraphs A.(1) through A.(5) of the "ACCOMPLISHMENT INSTRUCTIONS" in BAe SB 29-JA 901242, dated June 18, 1991, Revision 1, dated September 25, 1991. (2) Measure for excessive torque in accordance with paragraphs A.(1) through A.(3) of the "ACCOMPLISHMENT INSTRUCTIONS" in AP Precision Hydraulics Ltd. SB 8679-29-02, dated April 1991, Revision 1, dated August 1991. (i) If torque is not found excessive in accordance with paragraph A.(4) of the "ACCOMPLISHMENT INSTRUCTIONS" in AP Precision Hydraulics Ltd. SB 8679-29-02, dated April 1991, Revision 1, dated August 1991, prior to further flight, release the safety catch and perform paragraphs A.(7) through A.(10) of the "ACCOMPLISHMENT INSTRUCTIONS" in BAe SB 29-JA 901242, dated June 18, 1991, Revision 1, dated September 25, 1991. (ii) If excessive torque is found in accordance with paragraph A.(4) of the "ACCOMPLISHMENT INSTRUCTIONS" in AP Precision Hydraulics Ltd. SB 8679-29-02, dated April 1991, Revision 1, dated August 1991, prior to further flight, recondition the selector valve as specified in paragraph A.(5) of the "ACCOMPLISHMENT INSTRUCTIONS" in AP Precision Hydraulics Ltd. SB 8679-29-02, dated April 1991, Revision 1, dated August 1991, release the safety catch, and perform paragraphs A.(7) through A.(10) of the "ACCOMPLISHMENT INSTRUCTIONS" in BAe SB 29-JA 901242, dated June 18, 1991, Revision 1, dated September 25, 1991. (c) 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. (d) An alternative method of compliance or adjustment of the compliance times that provides an equivalent level of safety may be approved by the Manager, Brussels Aircraft Certification Office, FAA, Europe, Africa, and Middle East Office, c/o American Embassy, B- 1000 Brussels, Belgium. The request should be forwarded through an appropriate FAA Maintenance Inspector, who may add comments and then send it to the Manager, Brussels Aircraft Certification Office. (e) The inspections and modifications required by this AD shall be done in accordance with BAe Alert Service Bulletin 29-A-JA881143, dated February 24, 1989; BAe Service Bulletin 29-JA 901242, which incorporates the following pages: Pages Level Date 2, 3, 5, and 6 Original June 18, 1991 1 and 4 Revision 1 September 25, 1991; and AP Precision Hydraulics Ltd. Service Bulletin 8679-29-02, which incorporates the following pages: Pages Level Date 1, 2, and 3 Original April 1991 4 Revision 1 August 1991 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 British Aerospace, Regional Aircraft Limited, Manager Product Support, Prestwick Airport, Ayrshire, KA9 2RW Scotland; or British Aerospace, Inc., Librarian, Box 17414, Dulles International Airport, Washington, DC, 20041; and AP Precision Hydraulics Ltd., P.O. Box 1, Shaw Road, Speke, Liverpool, England, L24 9JY. Copies may be inspected at the FAA, Central Region, Office of the Assistant Chief Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri, or at the Office of the Federal Register, 1100 L Street, NW; Room 8401, Washington, DC. (f) This amendment (39-8200) supersedes AD 90-02-14, Amendment 39-6434. (g) This amendment (39-8200) becomes effective on April 30, 1992. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_92-07-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 92-07-04 Document Type: AD Final Rules Docket Number: 91-CE-61-AD Subject Heading: Airworthiness Directives; BRITISH AEROSPACE HP 137 Mk1, Jetstream Models 200, 3101, and 3201 Airplanes Subject: Emergency Gear & Flap Exten. Sys Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 04/30/1992 Make: British Aerospace Regional Aircraft Model: H.P. 137 Jetstream Mk. 1 | Jetstream 3201 | Jetstream Series 200 | Jetstream Series 3101 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: 92-07-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: 91-CE-61-AD AMENDMENT: 39-8200 AD NUMBER: 92-07-04 SUBJECT HEADING: Airworthiness Directives; BRITISH AEROSPACE HP 137 Mk1, Jetstream Models 200, 3101, and 3201 Airplanes ACTION: SUMMARY: DATES: Effective April 30, 1992. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 92-07-04 BRITISH AEROSPACE (BAe), REGIONAL AIRCRAFT LIMITED: Amendment 39-8200. Docket No. 91-CE-61-AD. Supersedes AD 90-02-14, Amendment 39- 6434. Applicability: HP 137 Mk1, Jetstream Models 200, 3101, and 3201 airplanes (all serial numbers), certificated in any category. Compliance: Required as indicated, unless already accomplished. To prevent landing gear or flap extension malfunction during operation of the emergency hydraulic system, accomplish the following: (a) Within the next 600 hours time-in-service (TIS) after February 5, 1990 (the effective date of AD 90-02-14, Amendment 39-6434), modify the detent ball catch of the emergency gear and flap extension hydraulic system selector valve in accordance with the instructions in BAe Alert Service Bulletin (SB) 29-A-JA881143, dated February 24, 1989. (b) Upon the accumulation of 1,600 hours TIS, or within the next 200 hours TIS after the effective date of this AD, whichever occurs later, and thereafter at intervals not to exceed 1,800 hours TIS, accomplish the following: (1) Modify the emergency gear and flap extension hydraulic system valve in accordance with paragraphs A.(1) through A.(5) of the "ACCOMPLISHMENT INSTRUCTIONS" in BAe SB 29-JA 901242, dated June 18, 1991, Revision 1, dated September 25, 1991. (2) Measure for excessive torque in accordance with paragraphs A.(1) through A.(3) of the "ACCOMPLISHMENT INSTRUCTIONS" in AP Precision Hydraulics Ltd. SB 8679-29-02, dated April 1991, Revision 1, dated August 1991. (i) If torque is not found excessive in accordance with paragraph A.(4) of the "ACCOMPLISHMENT INSTRUCTIONS" in AP Precision Hydraulics Ltd. SB 8679-29-02, dated April 1991, Revision 1, dated August 1991, prior to further flight, release the safety catch and perform paragraphs A.(7) through A.(10) of the "ACCOMPLISHMENT INSTRUCTIONS" in BAe SB 29-JA 901242, dated June 18, 1991, Revision 1, dated September 25, 1991. (ii) If excessive torque is found in accordance with paragraph A.(4) of the "ACCOMPLISHMENT INSTRUCTIONS" in AP Precision Hydraulics Ltd. SB 8679-29-02, dated April 1991, Revision 1, dated August 1991, prior to further flight, recondition the selector valve as specified in paragraph A.(5) of the "ACCOMPLISHMENT INSTRUCTIONS" in AP Precision Hydraulics Ltd. SB 8679-29-02, dated April 1991, Revision 1, dated August 1991, release the safety catch, and perform paragraphs A.(7) through A.(10) of the "ACCOMPLISHMENT INSTRUCTIONS" in BAe SB 29-JA 901242, dated June 18, 1991, Revision 1, dated September 25, 1991. (c) 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. (d) An alternative method of compliance or adjustment of the compliance times that provides an equivalent level of safety may be approved by the Manager, Brussels Aircraft Certification Office, FAA, Europe, Africa, and Middle East Office, c/o American Embassy, B- 1000 Brussels, Belgium. The request should be forwarded through an appropriate FAA Maintenance Inspector, who may add comments and then send it to the Manager, Brussels Aircraft Certification Office. (e) The inspections and modifications required by this AD shall be done in accordance with BAe Alert Service Bulletin 29-A-JA881143, dated February 24, 1989; BAe Service Bulletin 29-JA 901242, which incorporates the following pages: Pages Level Date 2, 3, 5, and 6 Original June 18, 1991 1 and 4 Revision 1 September 25, 1991; and AP Precision Hydraulics Ltd. Service Bulletin 8679-29-02, which incorporates the following pages: Pages Level Date 1, 2, and 3 Original April 1991 4 Revision 1 August 1991 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 British Aerospace, Regional Aircraft Limited, Manager Product Support, Prestwick Airport, Ayrshire, KA9 2RW Scotland; or British Aerospace, Inc., Librarian, Box 17414, Dulles International Airport, Washington, DC, 20041; and AP Precision Hydraulics Ltd., P.O. Box 1, Shaw Road, Speke, Liverpool, England, L24 9JY. Copies may be inspected at the FAA, Central Region, Office of the Assistant Chief Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri, or at the Office of the Federal Register, 1100 L Street, NW; Room 8401, Washington, DC. (f) This amendment (39-8200) supersedes AD 90-02-14, Amendment 39-6434. (g) This amendment (39-8200) becomes effective on April 30, 1992. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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