# SDR UALA2012102206038

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 22, 2012
- Submitted: November 15, 2012
- Operation: Air carrier
- Aircraft: [N777UA](https://openairdocs.org/aircraft/N777UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26916
- Aircraft time: 71,054 hours, 12,798 cycles
- Engine: Pwa PW4077
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Header
- Condition: Cracked
- Location: Heat Exchanger
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012102206038

## Discrepancy

RIGHT PACK RAM AIR OUTLET HEADER HAS CRACKS 2.5" LONG AND 2" LONG, ALONG THE HEADER WELDS.  REMOVED RIGHT PACK HEAT EXCHANGER.  REPLACED DUEL HEAT EXCHANGER.

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