# SDR MALA090008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 18, 2009
- Submitted: January 19, 2009
- Operation: Air carrier
- Aircraft: N442XJ
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 442
- Aircraft time: 24,027 hours, 26,390 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Duct
- Condition: Overtemp
- Location: Right
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MALA090008

## Discrepancy

DUCT OVERTEMP RIGHT SIDE, AFTER HELD IN MAN MODE FOR 3 SECONDS.  LITTLE BIT OF SMOKE IN CABIN STOPPED ONCE BLEED AND HP WAS CLOSED.  PERFORMED COMPLETE TEMP CONTROL CHECK OF LT, RT PACKS.  UNABLE TO DUPLICATE DISCREPANCY.  SUSPECT CREW OPERATING PROCEDURE CAUSED OVERTEMP CONDITION AND SUBSEQUENT ODOR IN CABIN.  HOLDING MANUAL MODE SWITCH TO FULL HOT FOR 3 SECONDS WILL CAUSE R DUCT OVERTEMP.  NO SMOKE NOTED DURING OPS CHECKS.  LT, RT PACKS MANUAL MODE OPERATE AS REQ. LT, RT PACKS AUTO MODE DEFERRED.  ALL CHECKS GOOD.  REF SAAB AMM CH 21-60-00.

---
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.