# SDR 99ZZZX3822

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 22, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N3356V](https://openairdocs.org/aircraft/N3356V), registered now
- Make and model: Cessna 150M
- Registry model: [Cessna 150M](https://openairdocs.org/model/cessna-150m) (OpenAirDocs)
- Aircraft serial: 15076471
- Engine: Cont O200A
- System (JASC): [7810 · Engine Collector/Tailpipe/Nozzle](https://openairdocs.org/jasc/7810)
- Part: Gasket
- Part number: 5A627429
- Condition: Mismanufacturing
- Location: Exhaust
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX3822

## Discrepancy

DURING MAJOR OVERHAUL WHILE INSTALLING MUFFLERS WITH NEW SUPERIOR 'BLO PROOF' EXHAUST GASKETS, FOUND GASKET TO TOUCH INTAKE ON ADJACENT CYLINDERS 1 AND 3 AND WOULD NOT FIT FLUSH AT CYLINDERS 2 AND 4.  THIS COULD LEAD TO EXHAUST BEING DIRECTLY PORTED ON INTAKE GASKETS AND BURING THEM OUT  CAUSING A LEAN CYLINDER CONDITION.  PROFILE GASKET EDGE.

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