# SDR CALA2022122303479

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 23, 2022
- Submitted: December 23, 2022
- Operation: Air carrier
- Aircraft: [N38417](https://openairdocs.org/aircraft/N38417), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 31665
- Aircraft time: 45,716 hours, 16,031 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Heat Exchanger
- Part number: 1828203
- Part serial: 6773
- Condition: Leaking
- Location: Rt A/C Pack
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2022122303479

## Discrepancy

RIGHT  PACK PRIMARY HEAT EXCHANGER HAS LARGE LEAK UPPER FORWARD LNBD CORNER. FOUND SECONDARY HEAT EXCHANGER CRACKED AT FWD UPPER INBD CORNER. REMOVED PRIMARY AND SECONDARY HEAT EXCHANGER AND DIFFUSER ASSY. REF AMM 21-51-03-000-805-002.   REPLACED SECONDARY HEAT EXCHANGER, PRIMARY PLENUM, PRIMARY :1  29-2151-3-0064,QTY :1  29-2151-9-9001,QTY :1 DIFFUSER INNER LINING. REF AMM 21-51-03-400-804-002. OPS CHECKED GOOD, NO LEAKS FOUND.

---
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.