# SDR SCNA99062

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 5, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N152SY](https://openairdocs.org/aircraft/N152SY), registered now
- Make and model: Doug DC-10-15
- Registry model: [Doug DC-10-15](https://openairdocs.org/model/mcdonnell-douglas-dc-10-15) (OpenAirDocs)
- Aircraft serial: 48289
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: 20497511
- Condition: Malfunctioned
- Location: Nr 1
- Stage of operation: CL
- Nature of condition: J, B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SCNA99062

## Discrepancy

DURING CLIMBOUT, THE DUCT-AVIONIC COMPARTMENT OVERHEAT LIGHT ILLUMINATED.  CABIN ALTITUDE COULD NOT BE REGULATED AND CONTINUED CLIMBING A 750 FPM.  RETURNED AIRCRAFT TOMSP.  ON TAXI IN SMOKE REPORED IN THE AFT CABIN.  FOUND THE NR 1 AIR CYCLE MACHINE TO BE WEAK AND TEMPERATURE CONTROL VALVE INDICATION TOB EE INOPERATIVE.  REMOVED AND REPLACED BOTH TEMPERATURE CONTROL VALVE AND NR 1 AIR CYCLE MACHINE.  OPERATIONALLY CHECKS GOOD.

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