# SDR ASAA2022061038605

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 10, 2022
- Submitted: June 10, 2022
- Operation: Air carrier
- Aircraft: [N494AS](https://openairdocs.org/aircraft/N494AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41729
- Aircraft time: 23,207 hours, 7,133 cycles
- System (JASC): [4960 · APU Controls](https://openairdocs.org/jasc/4960)
- Part: Ecu
- Part number: 707208601
- Part serial: 6505150201735
- Condition: Faulty
- Location: Aft Cargo Door
- Part time: 23,207 hours, 7,133 cycles
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022061038605

## Discrepancy

APU TREND DATA SHOWS CT5ATP TEMP IS AT OR ABOVE THE THRESHOLD 593 DEGREES BUT LESS THAN 605 DEGREES. GROUNDED - YES. REF B737-900 AMM 49-61-12 REMOVED AND REPLACED ECU. OPS CHECK GOOD.

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