# SDR CALA2026030214211

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 27, 2026
- Submitted: March 2, 2026
- Operation: Air carrier
- Aircraft: [N14118](https://openairdocs.org/aircraft/N14118), registered now
- Make and model: Boeing 757224
- Aircraft serial: 27560
- Aircraft time: 99,544 hours, 23,515 cycles
- System (JASC): [7397 · Engine Fuel System Wiring](https://openairdocs.org/jasc/7397)
- Part: Terminal Block
- Part number: 12220BE01A
- Condition: Faulty
- Location: Zone 400
- 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/CALA2026030214211

## Discrepancy

RTO APPROX 30 KTS. RT ENG LIMITER RT ENG EEC MESSAGES.  REPLACED R ENG LIMITER SWITCH MASTER MODULE REF B757-200 AMM 33-13-00-962-041. ADD EMP:U257092 NOTE: RT LIMITER SWITCH S6 WAS REPLACED ON O/H P5 PNL. REF. AMM B757-2 AMM 33-13-00-962-041. EEC, BVCU, AND TPU - NO FAULTS. REF. SSM 73-21-05 PERFORMED WIRI NG CHKS DGCU A M10157, DGCU B M10165 TO DG STATOR M10169- ALL OK , PERFORMED EEC RT M10392 D4064 WIRE CHKS TO FFG D1372, D1370, D 1374 (OHM CHK, SHORTS, LOAD TESTED) - ALL OK. CONT'. CHKED EICAS CIRCUIT AND NO FAILURES NOTED. DID NOTED W/ EEC SWITCH ON, PULLING ENG HP BLD VLV-R D22 CB, EEC LIMITER, AND EEC CONT LIGHTS IL LUMINATED.  REF. SSM 73-21-05 (WDM) NEED TO CHK DGCU M10157 D1388/ M10165 D1484 PIN 16 TO EEC M10392 D4064 PIN 16 CHECKING THROUGH P37 TB, DIODES R10258, R10257, ENGINE TB PATCH MODULE. REMOVED AND REPLACED TERMINAL BLOCK DIODES R10257 AND PERFORMED POWER RUN NO FAULTS FOUND AT THIS TIME. VERIFIED FAULT CORRECTED

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