# SDR CALA2023021300430

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 13, 2023
- Submitted: February 13, 2023
- Operation: Air carrier
- Aircraft: [N69826](https://openairdocs.org/aircraft/N69826), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 42180
- Aircraft time: 26,936 hours, 9,706 cycles
- System (JASC): [7321 · Fuel Control/Turbine Engines](https://openairdocs.org/jasc/7321)
- Part: Hmu
- Part number: NA
- Condition: Faulty
- Location: Eng #1
- Stage of operation: TO
- How discovered: O
- Nature of condition: O
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2023021300430

## Discrepancy

RTO BELOW 80 KTS DUE TO 1 ENGINE NOT PRODUCING REQ. THRUST WITH A/T AND MANUAL MONITORING CHANGES TO REGULATOR -9. REF FIM 73-05-TASK808,  ACPD #1 ENG EEC BITE, NO FAULTS NOTED, ACPD #1 ENG EEC ACT TEST, NO FAULTS, STARTED #1 ENG-IDLE, HAD REGULATOR 9 ON INPUT MONITORING AT FIRST MINUTE THEN CHANGED TO REGULATOR 3,  PUSHING #1 ENG THROTTLE JUST ABOVE IDLE - INPUT ADD EMP:U264492 REMOVED & REPLACED #1 ENGINE HMU. IDLE RUN PERFORMED. QTY LEAK & OPS CHECK GOOD. ACPD TEST 5 PWR ASSURANCE CHECK #1 ENGINE. TO INCLUDE UP TO TKO PWR, ALL PARAMETERS IN NORMAL RANGE WITH THROTTLES MATCHED. NO FAULTS DETECTED ON #1 EEC BITE, NO LEAKS NOTED ON ENGINE RUN. PARTS USED:  29-7321-3-0017,QTY 29-7321-9-0012,QTY :1 ADD EMP:U027741,U390982 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1765897  SN OFF 6895 TT # 1851497  SN OFF 0855 PUMP, MAIN FUEL OFF 29-7311-9-0001 6895 ON 29-7311-9-0001 7000 UNIT, HYDROMECH  OFF 29-7321-9-0012 0855 ON 29-7321-9-0012 6015

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