# SDR 95ZZZX4475

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 1, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N9608H](https://openairdocs.org/aircraft/N9608H), registered now
- Make and model: Cessna 172M
- Registry model: [Cessna 172M](https://openairdocs.org/model/cessna-172m) (OpenAirDocs)
- Aircraft serial: 17266261
- System (JASC): [7900 · Engine Oil System (Airframe Furnished)](https://openairdocs.org/jasc/7900)
- Part: Breather Tube
- Condition: Malfunction
- Location: Crankcase
- 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/95ZZZX4475

## Discrepancy

CRANKCASE BREATHER TUBE MALFUNCTION.  STOCK 172M BREATHER TUBE HAD SLIPPED DOWN IN CLAMPS.  LOWER CLAMP COVERED 'WHISTLE HOLE'.  THIS COULD RESULT IN BREATHER TUBE BLOCKAGE WITH ICE DURING FLIGHT AT LOW OUTSIDE AIR TEMPERATURE.  SAME PROBLEM WAS ADDRESSED IN AD 82-07-02.  (THIS AD WAS FOR MISSING WHISTLE HOLE IN STC APPROVED EQUIPMENT.)  FIX WAS TO REPLACE BREATHER TUBE CLAMPS.  PART TOTAL TIME:  18 YEARS, 6,000 HOURS.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.