# SDR 401104242008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 24, 2008
- Submitted: May 13, 2008
- Operation: Air carrier
- Aircraft: N129LN
- Make and model: Snias AS350B2
- Aircraft serial: 4011
- Engine: Tmeca ARRIEL1D1
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Blower
- Part number: 050143
- Part serial: 00599R
- Condition: Burned
- Location: Evaporator
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: H, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/401104242008

## Discrepancy

WHILE IN CRUISE FLIGHT, RETURNING TO BASE (WITH NO PATIENT ON BOARD) THE MED CREW REPORTED A SMELL OF BURNING RUBBER COMING OUT OF THE AIR CONDITIONING VENTS. PILOT PERFORMED A PRECAUTIONARY LANDING WITHOUT INCIDENT IN A FIELD. MAINT INSPECTED THE A/C SYSTEM AND FOUND NO EVIDENCE OF A/C SYS FAILURE. SUSPECTED INTERNAL FAILURE OF UPPER EVAPORATOR BLOWER. SYSTEM DEACTIVATED AND DEFERRED IAW MEL. AIRCRAFT RETURNED TO BASE WITH NO FURTHER (SMELL). LATER, CHANGED UPPER EVAPORATOR BLOWER.

---
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.