Airworthiness Directive 98-27327
one-timeAirworthiness Directives; British Aerospace Jetstream Models 3101 and 3201 Airplanes
What this AD requires
This amendment adopts a new airworthiness directive (AD) that applies to certain British Aerospace Jetstream Models 3101 and 3201 airplanes that are equipped with the ground inhibit function (Modification JM7813A (SB 27-JM7813A) or JM7813B). This AD requires removing the ground inhibit time delay and the ground test relay from the stall warning and protection system and rewiring part of the stall warning and protection system to assure that system reliance is maintained after relay removal. 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 failure of the ground inhibit relay while it is in the energized position caused by the current design, which could result in failure of the stall warning system and possible loss of control of the airplane in certain situations if the crew was not aware that the system had failed.
Which aircraft AD 98-27327 applies to
certain
Whether AD 98-27327 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
How AD compliance is recorded
A valid compliance record (14 CFR 43.9) states:
Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.
Look up a tail number →Read the full directive (Federal Register)Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.