# SDR 2009FA0000191

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 8, 2009
- Submitted: March 8, 2009
- Operation: General aviation
- Aircraft: [N302A](https://openairdocs.org/aircraft/N302A), registered now
- Make and model: Cessna M337B
- Registry model: [Cessna M337B](https://openairdocs.org/model/cessna-m337b) (OpenAirDocs)
- Aircraft serial: M3370331
- Aircraft time: 3,600 hours, 3,600 cycles
- System (JASC): [3222 · Nose/Tail Landing Gear Strut/Axle](https://openairdocs.org/jasc/3222)
- Part: Cylinder Head
- Part number: 2947171
- Condition: Cracked
- Location: Mlg Strut
- Part time: 3,600 hours, 800 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2009FA0000191

## Discrepancy

WHILE INVESTIGATING A HYD FLUID LEAK IN THE NOSE WHEEL WELL, LOCATED CRACK IN THE RETRACT CYLINDER HEAD BETWEEN THE ATTACH BOLT/BUSHING BOSS AND THE BARREL THREADS, IN THE UPPER RADIUS.  THERE WERE NO TOOL MARKS TO CREATE A STRESS RISER, AND NO HARD LANDINGS NOTED.  THIS WAS NOT VISIBLE, WITHOUT REMOVING THE RETRACT CYLINDER, AS IT WAS HIDDEN BY THE ATTACH STRUCTURE IN THE WHEEL WELL. APPROX 800 FLIGHT HOURS AND 19 YEARS SINCE LAST CYLINDER REMOVAL/RE-SEAL.

---
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.