# SDR CALA2026022414053

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 21, 2026
- Submitted: February 24, 2026
- Operation: Air carrier
- Aircraft: [N14118](https://openairdocs.org/aircraft/N14118), registered now
- Make and model: Boeing 757224
- Aircraft serial: 27560
- Aircraft time: 99,530 hours, 23,511 cycles
- System (JASC): [7300 · Engine Fuel and Control](https://openairdocs.org/jasc/7300)
- Part: Gcu
- Part number: 430101
- Part serial: 3100589
- Condition: Faulted
- Location: Nr 2
- Part time: 61,245 hours, 14,243 cycles
- 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/CALA2026022414053

## Discrepancy

RTO AT 90. RE ENG EEC AND R ENG LIMITER. PERFORMED ENG 2 BPCGU BITE TEST PER AMM 75-32-01-742-002-R00, NO FAULTS FOUND. PERFORMED TPU BITE TEST IAW AMM 75-32-00-702-003-R03, NO FAULTS FOUND. PERFORMED MCDP TEST 66  PLA DEG /L/R, WITHIN LIMITS IAW AMM 22-00-02-742-011. PER FIM TASK 73-21 FAULT TREE 820 M10157 DGCU- A, FAIL DIODE CONTINUITY CHECK. NEED REPLACEMEN OF M10157. TECH SUPPORT UPDATE,  REMOVED AND REPLACED DGCU M10157 IAW AMM REF 73-21-10/401. NEED TO PERFORM TEST 2 PER POWER PLANT TEST REF TABLE 71-00-00-700-804-R03 AND BVCU BITE CHECK.  PERFORMED BVCU BITE TEST ON ENGINE 2 PER AMM 75-32-01-742-002-R00, NO FAULTS NOTED. BITE TEST OK. PERFORMED TLA TRANSDUCER ADJ TEST IAW AMM 73-21-09-825-095-R00, TESTED OK. DUE TO NATURE OF GRIPE REQUEST POWER PLANT TEST NO. 5 REF AMM 71-00-00-715-089.  PERFORMED RT ENGINE POWER PLANT PERFORMACE TEST NR 5 AT 1.7 EPR FOR 5 MIN. ENGINE PARAMETERS WERE WITHIN LIMITS. NO ENGINE EEC OR ENG LIMITER  EICAS MESSAGES DISPLAYED. OK TO CONTINUE.

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