AD 89-11-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 737-300 Series | Airworthiness Directives; BOEING Model 737-300 Series Airplanes |
Unsafe Condition
Loss of the primary attitude display to both pilots during Instrument Meteorological Conditions (IMC) or during extended range flight due to Inertial Reference Units (IRU) part number S242T101-103 without Mod 6 implemented.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect IRUs to determine part number and modification status within 10 days after the effective date. Add specific restrictions to the AFM Limitations Section based on IRU configuration and install a placard approved by FAA POI. Compliance remains until IRUs are modified per Honeywell SBs or replaced with P/N S242T101-105.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 10 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
BOEING Model 737-300 series airplanes not equipped with Electronic Flight Instrument System (EFIS), certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.