SAIB ACE-96-02

SPECIAL

AIRWORTHINESS

INFORMATION

BULLETIN

AIRCRAFT CERTIFICATION SERVICE 800 INDEPENDENCE AVENUE, S.W.

WASHINGTON, DC 20591

U.S. Department of Transportation Federal Aviation Administration

No. ACE-96-02 March 13, 1996

Published by: FAA, AFS-613, P.O. Box 26460, Oklahoma City, OK 73125 This is issued for informational purposes only and any recommendation for corrective action is not mandatory.

INTRODUCTION:

The purpose of this Special Airworthiness Informa tion Bulletin is to advise operators of British Aerospace Jetstream HP 137 Mark 1, 200, 3100, 3200 mode l airplanes of the need to review the Service Bulletins listed in this bulletin. The first portion addresses aging airplane issues. The second portion addresses separate issues that deserve operator attention.

AGING COMMUTER AIRPLANE PROGRAM

BACKGROUND:

A review of British Aerospace Jetstream Mk1, 200, 3100, and 3200 series Service Bulletins was conducted as part of the Aging Commuter Airplane program. Participation in the review included the certification branches of the Federal Aviati on Administration (FAA) and UK Civil Aviation Authority (CAA), Jetstream Engineering and Custom er Service representatives, a representative of the Regional Airlines Association, and several domes tic and foreign operators. The purpose of this review was to evaluate each age-related service bu lletin and determine if any further FAA action was necessary to ensure the level of safety desired for commuter operations.

The options considered by the group included: mandated compliance by initiation of an Airworthiness Directive, various forms of notices, or no further action required. The group reached a consensus with a recommended action for each bulletin. The FAA further reviewed these recommendations and determined that several bulletins should be re-confirmed for compliance because they significantly contribute to the higher level of safety expected for commuter operations.

RECOMMENDATION:

FAA recommends that all operators of Jetstr eam HP 137 Mk1, 200, 3100, and 3200 airplanes review their compliance of the service bulletins listed be low. If compliance has not previously been accomplished, FAA recommends accomplishment as soon as possible. For exact model and serial number effectivity, refer to the service bulletin.

NOTE: This is not an all inclusive list of service bulletins applicable to these airplanes.

JETSTREAM SB NO. DATE TITLE (Model Affected)

1/2 3/72 (1) Fatigue Lives of Items fitted on Jetstream Mk1 Aircraft

6/8 7/15/82 Cabin Entrance Door Internal Handle - Disconnection (HP 137 Mk1, 200)

2 ACE-96-02

JETSTREAM SB NO. DATE TITLE (Model Affected)

1147 12/69 Fuselage - To Improve Strength of Frame Attachment at Frame 75.15. (HP 137 Mk1)

1358 10/75 Fuselage - To Introduce Reinforcing of Front Pressure Bulkhead Boundary Angle. (HP 137 Mk1)

27-A-JA 870210 4/3/87 Flying Controls - In spection of Selected Primary Flying Rev. 1 Control Cables Ball End Fitting for Cracking. (3100)

27-A-JA 880145 6/2/90 Flight Controls - Cracking of Brake Master Cylinder Rev. 2 Mounting Assemblies at Rudder Pedals.

(HP 137 Mk1, 200, 3100, 3200)

32-A-JA 840318 8/25/94 (2) Landing Gear - Failure of Main Landing Gear Door Rev. 2 Operating Rod Eye End, Door Hinge Assembly and Hinge Brackets. (Mk1, 200, 3100)

32-A-JA 890940 6/1/93 Landing Gear - Insp ection and Rectification of Chafing Rev. 1 Wear of Upper Toggles. (HP 137 Mk1, 200, 3100, 3200)

53-A-JA 850610 8/21/85 Fuselage - To Introduce An Inspection For Cracks of the Nose Equipment Bay Spine Member. (HP 137 Mk1, 200, 3100)

57-JM 5201 2/3/88 Wings - Introduction of Strengthened Attachments to Ailerons. (HP 137 Mk1, 200)

57-A-JM 5220 7/25/83 Wings, Access Panel W33 - Panel Ring Assembly Fastener Rev. 1 Hole Sizes. (HP 137 Mk1, 200, 3100)

57-A-JM 5232 5/16/88 Wings - Feather Edges at Holes used to secure under Wing Rev. 1 Fuel Tank Access Panels. (HP 137 Mk1, 200, 3100)

57-A-JM 5281 1/30/90 Wings - Introduction of Improved Aileron Tab Hinges Rev. 1 (Inner and Outer) (Modification JM 5281) (200, 3100)

57-JM 7314 6/6/86 Wings - Reinforcing the Bottom Wing Skin at the Landing Rev. 1 Gear Bay Cutout at Wing Station 115. (3100)

Notes: (1) Jetstream issued TOS/JET/109, Rev. 2, Jetstream Civil Role - Lifed Components List, December 21, 1993. This document addresses com ponent lives for all Jetstream models. Lives specified in Type Certification Data Sheets or Airworthiness Directives are mandatory, and have precedence over lives listed in TOS/JET/109. Howeve r, this document includes lives for components in addition to those that are FAA mandatory. Although not yet mandatory, the FAA strongly recommends that operators adhere to these additi onal lives. The FAA's Aging Airplane Program has identified limits such as those specified in this document as an important part of ensuring the continued airworthiness of aging airplanes.

ACE-96-02 3

(2) Jetstream issued Jetstream Service Newsletter JSNL 32-208, Landing Gear Doors/Door Mechanisms, on December 7, 1993. It provi des information regarding several SB's that address the subject, including 32- A-JA-840318. Operators should review JSNL 32-208 and consider its recommendations.

Several SB's and JSNL's evaluated during the review addressed corrosion. Jetstream issued JS/CPCP/1, Corrosion Prevention and Control Programme (CPCP), December 13, 1993. This document is the manufacturer's recommended maintenance and inspection program to prevent and control corrosion. It includes references to those corrosion related SB's and JSNL's. The United Kingdom Civil Aviation Authority (CAA) mandated th e CPCP, but the FAA has not yet done so. The FAA strongly recommends that operators follow the maintenance and inspection procedures specified in that document and the referenced bulletins and newsletters. The FAA's Aging Airplane Program has identified corrosion prevention and control as anot her essential element of continued airworthiness of aging airplanes.

FOR FURTHER INFORMATION CONTACT:

Marv Nuss, Aerospace Engineer, FAA, Regulations and Policy Branch (ACE-111), Small Airplane Directorate, 601 East 12th Street, Kansas City, Missouri, telephone (816) 426-6941.

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OTHER JETSTREAM ISSUES

BACKGROUND:

In addition to aging airplane related Service Bulletins, the FAA has reviewed Service Bulletins relating to a variety of issues such as maintenance or available product improvements.

RECOMMENDATION:

FAA recommends that all operators of Jetstr eam HP 137 Mk1, 200, 3100, and 3200 airplanes review their compliance of the service bulletins listed be low. If compliance has not previously been accomplished, FAA recommends accomplishment as soon as possible. For exact model and serial number effectivity, refer to the service bulletin.

NOTE: This is not an all inclusive list of service bulletins applicable to these airplanes.

JETSTREAM SB NO. DATE TITLE (Model Affected)

76-JK 2967 2/3/95 Engine Controls Secondary Flight Idle Baulk (3100, 3200 series)

FOR FURTHER INFORMATION CONTACT:

Jeffrey Morfitt, Aerospace Engineer, FAA, Proj ect Support Branch (ACE-112), Small Airplane Directorate, 601 East 12th Street, Kansas City, Missouri, telephone (816) 426-6932.