AD 2008-13-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A330 | Airworthiness Directives; Airbus Model A330 Airplanes and Model A340-200 and -300 Series Airplanes |
| aircraft | Grumman | Various | Airworthiness Directives; Airbus Model A330 Airplanes and Model A340-200 and -300 Series Airplanes |
Unsafe Condition
The magnetic variation table installed in certain Honeywell and Northrop Grumman ADIRUs is obsolete at certain airports, leading to differences between actual magnetic variation and the values in the ADIRU magnetic variation tables, which could cause the airplane to depart the runway during a CAT 2 or CAT 3 automatic landing or roll-out.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Revise the Limitations Section of the Airbus A330 or A340 AFM within 14 days after the effective date of this AD to prohibit the flightcrew from performing CAT 2 and CAT 3 automatic landings and roll-outs at certain airports by incorporating the applicable Temporary Revision into the AFM.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 14 days after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Airbus Model A330-200, A330-300, A340-200, and A340-300 series airplanes equipped with Honeywell ADIRUs having part numbers HG2030AC0X (where X is any number between 0 and 9 inclusive) and HG2030ADYY (where YY is any number between 00 and 10 inclusive), or Northrop Grumman ADIRUs having part numbers 465020-030303ZZ (where ZZ is any number between 00 and 12 inclusive).
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.