# SDR SIMA200707102

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 2007
- Submitted: March 12, 2007
- Operation: Air carrier
- Aircraft: [N729AE](https://openairdocs.org/aircraft/N729AE), registered now
- Make and model: Emb EMB-135LR
- Registry model: [EMB EMB-135LR](https://openairdocs.org/model/embraer-emb-135lr) (OpenAirDocs)
- Aircraft serial: 145343
- Aircraft time: 14,458 hours, 13,058 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Coupling
- Part number: 8151138
- Condition: Blown
- Location: Acm
- Part time: 14,458 hours, 13,058 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: E
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA200707102

## Discrepancy

LOW PITCH VIBRATION HEARD CYCLING ON AND OFF IN FLIGHT COMING FROM AIR CYCLE MACHINE AREA.  REMOVED AND REPLACED COUPLING AT NUMBER TWO INLET TO DUAL TEMPERATURE CONTROL VALVE IAW EMB AMM 21-51-03.  OPERATIONAL CHECK GOOD, RETURNED AIRCRAFT TO SERVICE.

---
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.