Airworthiness directives › 2019-07-10
AD 2019-07-10 Airworthiness Directives; Northrop Grumman LITEF GmbH LCR-100 Attitude and Heading Reference System Units
Makes named: grumman. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD affects AD 2010-26-09, Amendment 39-16548 (75 FR 81424, December 28, 2010) (“AD 2010-26-09”). Accomplishing a certain requirement of this AD terminates the requirements of AD 2010-26-09.
Compliance
(1) Within 25 hours time-in-service (TIS), remove the AHRS unit from service. (2) Removal from service of P/N 145130-7100 terminates the requirements of AD 2010-26-09 (75 FR 81424, December 28, 2010). (3) Do not install an AHRS unit P/N 145130-2000, 145130-2001, 145130-7000, 145130-7001, or 145130-7100 on any aircraft.
Required actions
(1) The Manager, Boston ACO Branch, FAA, may approve AMOCs for this AD. Send your proposal to: Nick Rediess, Aviation Safety Engineer, Boston ACO Branch, Compliance and Airworthiness Division, 1200 District Avenue, Burlington, Massachusetts 01803; telephone (781) 238-7763; email nicholas.rediess@faa.gov. (2) For operations conducted under a 14 CFR part 119 operating certificate or under 14 CFR part 91, subpart K, we suggest that you notify your principal inspector, or lacking a principal inspector, the manager of the local flight standards district office or certificate holding district office, before operating any aircraft complying with this AD through an AMOC.
Unsafe condition
You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time.
Affected ADs
This AD defines the unsafe condition as the AHRS unit's analog outputs of attitude and heading data freezing without detection or warning. This condition could result in misleading attitude and heading information, anomalous autopilot behavior, and loss of control of the aircraft.
Read the original on the Federal Register →
You just looked this one up by hand
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1