# SDR CALA2026062417315

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 21, 2026
- Submitted: June 24, 2026
- Operation: Air carrier
- Aircraft: [N29975](https://openairdocs.org/aircraft/N29975), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 66134
- Aircraft time: 28,697 hours, 2,899 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: 7110121H01
- Part serial: 7216323
- Condition: Failed
- Location: Zone 100
- Part time: 18,526 hours, 1,773 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026062417315

## Discrepancy

RT PACK MODE ELEC ODOR IN CONDITION AIR PERFORMED CONDITIONAL INSPECTION IAW AMM 05-51-99-99A-282A-A, NO EVIDENCE OF ODOR PRESENT INSPECTED AREA NO DAMAGED FOUND.  DEBRIFED CREW THAT ODOR WAS PRESENT AFTER ENG START & ODOR WENT AWAY,  AFTER RT ACM FAILED WITH STATUS MESSAGE. STATUS MSG PACK ACM R PRESENT WITH MX MSG 21-65213 RT ACM FAILED.  REMOVED THE RT ACM.    DURING REMOVAL OF THE RT ACM, DEBRIS WAS FOUND COMING FROM THE ACM INTO THE BEARING COOLING HOSE. R & R RT ACM IAW AMM DMC-B787-A-21-52-02-02A-720A-A UP TO 1 D POST INSTALLATION TEST.  ACCOMPLISHED LEAK CHECK IAW DMC-B787-A-21-52-02-02A-720A-A  AND AMM B787-A-20-10-79-00A-280C-A NO LEAKS FOUND.   OPS TEST PASSED.

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