# SDR CALA2026032014703

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 19, 2026
- Submitted: March 20, 2026
- Operation: Air carrier
- Aircraft: [N652UA](https://openairdocs.org/aircraft/N652UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 25390
- Aircraft time: 131,964 hours, 20,041 cycles
- System (JASC): [2550 · Cargo Compartments](https://openairdocs.org/jasc/2550)
- Part: Drive Unit
- Part number: S451T20112
- Condition: Burned
- Location: Zone 100
- Stage of operation: IN
- How discovered: V
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026032014703

## Discrepancy

FWD CARGO AFT PALLET PDU 12L FOUND INOP. CB C173 IN PANEL P35 FOUND TRIPPED. ALL PDUS ON AFT PALLET ARE AFFECTED. UPON FURTHER INVESTIGATION PDU 12L CIRCUIT BOARD FOUND BURNT. PDU 12L REQUIRES REPLACEMENT. PDU12L REPLACED IAW AMM: 25-53-01. OPERATIONAL CHECK SATIS.PARTS USED:  64-2553-3-0160,QTY :1

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