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Airworthiness Directive

AD 98-21-14 63 FR 54564 Active

Federal Aviation Administration · 14 CFR part 39

Requires modifying the airplane's navigational system by shortening and re-clipping the cable looms to the No.

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FR document
98-26969
Amendment
39-10823
Published
1998-10-13
Effective
1998-11-02
Models covered
1

Last live check: 2026-10-04

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AD

98-21-14

FR doc 98-26969 · 63 FR 54564

AD 98-21-14Published 1998-10-13Effective 1998-11-02

FAA rule - 14 CFR 39

FAA rule. Compliance with an applicable AD is required under 14 CFR 39.7. Check its effective date, applicability, compliance times and current status.

Requires modifying the airplane's navigational system by shortening and re-clipping the cable looms to the No.

Full official abstract

This amendment adopts a new airworthiness directive (AD) that applies to certain British Aerospace Jetstream Model 3101 airplanes. This AD requires modifying the airplane's navigational system by shortening and re-clipping the cable looms to the No. 1 and No. 2 vertical gyroscopes, installing a warning label adjacent to the gyroscopes, and performing an operational check on the system. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for the United Kingdom. The actions specified by this AD are intended to prevent a cross connection in the No. 1 and No. 2 vertical gyroscopes, which could result in navigational errors during flight.

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All British Aerospace Jetstream 31/32 directives

View on Federal Register (opens in a new tab) View this AD in FAA DRS (opens in a new tab) Print AD packet (opens the full Federal Register document in a new tab)

Applies to 1 model in our index