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Airworthiness Directive

AD 98-21-28 63 FR 55015 Active

Federal Aviation Administration · 14 CFR part 39

FR document
98-27329
Amendment
39-10836
Published
1998-10-14
Effective
1999-01-15
Models covered
1
Last live check
2026-10-03

Printed from https://aircraftdirectives.com/ad/98-21-28 · AircraftDirectives restates official FAA and manufacturer records; the official sources named on this sheet control. Not an airworthiness determination.

This page is a reference Record, not an airworthiness or compliance determination. Official FAA and manufacturer sources control over our restatement, subject to governing law. Check applicability, current requirements and incorporated documents before acting. The owner or operator remains responsible for airworthiness and required records under 14 CFR 91.403 and 91.417, as applicable. Terms of Use: /terms.

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AD

98-21-28

FR doc 98-27329 · 63 FR 55015

AD 98-21-28Published 1998-10-14Effective 1999-01-15

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 propeller de-icing system to assure system performance at low ambient temperatures.

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 propeller de-icing system to assure system performance at low ambient temperatures. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for the United Kingdom. The actions specified in this AD are intended to prevent propeller-induced vibrations from occurring during icing encounters at low ambient temperatures, which could result in decreased performance of the de-icing system during icing encounters with possible loss of control of the airplane.

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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)

Applies to 1 model in our index