# SDR HNAA2026042300354

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 23, 2026
- Submitted: April 23, 2026
- Operation: Air carrier
- Aircraft: [N660CL](https://openairdocs.org/aircraft/N660CL), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145764
- Aircraft time: 48,270 hours, 45,679 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Part number: 4504113B
- Part serial: SPE0214332
- Condition: Odor
- Location: Zone 100
- Part time: 26,077 hours, 46,436 cycles
- Stage of operation: TX
- 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/HNAA2026042300354

## Discrepancy

STRONG CHEMICAL SMELL ENTERED COCKPIT AND CABIN WHILE APU RUNNING.  R & R APU IAW WC 49-80-05, OPS CK GOOD NO ABNORMAL SMELLS NOTED. CLEAR MEL.

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