# SDR A6WA201441873

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 17, 2014
- Submitted: August 25, 2014
- Operation: Air carrier
- Aircraft: [N448AW](https://openairdocs.org/aircraft/N448AW), registered now
- Make and model: Cndair CL6002B19
- Aircraft serial: 7814
- Aircraft time: 26,507 hours, 25,737 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Heat Exchanger
- Condition: Damaged
- Location: Ac Bay
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/A6WA201441873

## Discrepancy

WHILE LEVEL FL240, CABIN ALTITUDE BEGAN TO CLIMB, UNABLE TO MAINTAIN PRESSURIZATION.  RT PACK & RT 10TH STAGE PRESS APPEARED NORMAL, NO AIRFLOW FROM VENTS.  DECLARED AN EMER, PERFORMED QRH, LEVELED AT 10,000 FT UNPRESSURIZED.  INSP ALL DUCTING & PRESS LINES IN AFT EQUIP BAY.  FOUND RT DUAL HEAT EXCHANGER DUCT BLOWN OFF & FLANGE DAMAGED.  REMOVED DAMAGED HEAT EXCHANGER IAW AMM 21-51-07.  REPLACED RT HEAT EXCHANGER & DUCT IAW AMM 21-51-07, WORK ORDER WC 22.  OPERATIONS CHECK & LEAK CHECK.  SN OFF 200304092 & SN ON 200209170.

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