# SDR 2026FA0000799

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 24, 2026
- Submitted: September 30, 2026
- Operation: General aviation
- Aircraft: [N1067G](https://openairdocs.org/aircraft/N1067G), registered now
- Make and model: Mooney M20J
- Registry model: [Mooney M20J](https://openairdocs.org/model/mooney-m20j) (OpenAirDocs)
- Aircraft serial: 243174
- Aircraft time: 4,909 hours
- Engine: Lyc IO360A3B6
- Engine time: 523 hours
- Propeller: Mcauly B2D34C214
- System (JASC): [7510 · Engine Anti-Icing System](https://openairdocs.org/jasc/7510)
- Part: Door
- Part number: 600118015
- Condition: Broken
- Location: Engine Air
- Part time: 4,574 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: R
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026FA0000799

## Discrepancy

AIRCRAFT WAS IN CRUISE AT 6000' WHEN ALL 4 CYLINDERS EXPERIENCED ABNORMAL EGT RISE, SLIGHT REDUCTION IN CHT, AND ENGINE SURGING.  DIVERTED TO NEAREST AIRPORT.  REMOVED MAIN ENGINE AIR FILTER AND DISCOVERED 600118-015 ALTERNATE AIR DOOR WITH CRACKS EMANATING FROM AND COMPLETELY DETACHED FROM 600355-507 PLATE ASSEMBLY (PHOTOS AVAILABLE).  AD95-26-16 R1 WAS COMPLIED WITH.  PART FAILED 30 FLIGHT HOURS AFTER LAST ANNUAL. REGARDLESS OF PRIOR COMPLIANCE WITH AD95-26-16 R1, RECOMMENDATION IS MADE TO INCORPORATE AGGRESSIVE INSPECTION OF THE ALTERNATE AIR DOOR FOR CRACKS AT EVERY ANNUAL/100HR INSPECTION AND ANY TIME THE AIR FILTER IS REMOVED.

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