AD 98-02-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna Aircraft Company | 172R | Cessna Aircraft Company Model 172R |
Unsafe Condition
The potential for carbon monoxide gas to leak into the cabin heating system and cabin area due to inadequate or failed weldments in Aeroquip engine exhaust muffler part number 00624-NH4000011-10 71379 0554011-2.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
De-activate the cabin heating system by safety wiring the valve lever in the off position, install a placard stating 'CABIN HEATER INOPERATIVE' near the control knob, and replace the muffler within 50 hours time-in-service with an approved part number. If replacement parts are unavailable, operation may continue for up to 6 calendar months with heating system disabled.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Prior to further flight after receipt of this AD, and within the next 50 hours time-in-service (TIS) after receipt. If parts are unavailable, operation may continue for a period not to exceed 6 calendar months from receipt.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Cessna Aircraft Company Model 172R airplanes (serial numbers 17280001 through 17280305) equipped with Aeroquip engine exhaust muffler part number 00624-NH4000011-10 71379 0554011-2.
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.