AD 2019-07-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Grumman | Various | Airworthiness Directives; Northrop Grumman LITEF GmbH LCR-100 Attitude and Heading Reference System Units |
Unsafe Condition
The Northrop Grumman LITEF GmbH LCR-100 AHRS units may display misleading attitude and heading information, and the analog outputs may freeze without detection or warning, which could result in loss of control of the aircraft.
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Required Actions
Remove the LCR-100 AHRS units from service and prohibit installing them on any aircraft.
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Compliance Time
Before further flight
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Affected Aircraft
Northrop Grumman LITEF GmbH LCR-100 AHRS units with part numbers 145130-2000, 145130-2001, 145130-7000, 145130-7001, or 145130-7100 installed.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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