# SDR CALA2024010900069

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 7, 2024
- Submitted: January 9, 2024
- Operation: Air carrier
- Aircraft: [N58101](https://openairdocs.org/aircraft/N58101), registered now
- Make and model: Boeing 757224
- Aircraft serial: 27291
- Aircraft time: 111,630 hours, 23,939 cycles
- System (JASC): [7830 · Engine Thrust Reverser](https://openairdocs.org/jasc/7830)
- Part: Actuator
- Part number: 16160002
- Part serial: 1103
- Condition: Leaking
- Location: Nr 2 Engine
- Part time: 85,159 hours, 20,151 cycles
- Stage of operation: TO
- How discovered: O
- Nature of condition: J, O
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2024010900069

## Discrepancy

ON T/O ROLL THE RIGHT YELLOW REV LIGHT CAME ON A GAIN EVEN AFTER MEL 7831 F HAD BEEN APPLIED. REVERSED MEL #2 ENG T/R. PERFORMED ACTUATOR LOCK, CROSSOVER SHAFT INTEGRITY TEST IN REF AMM 78-31-00. CHECK OK.  PERFORMED #2 ENG T/R OPS TEST IN REF AMM 78-31-00-715-216-R01. CYCLED A FEW TIMES. OPS TEST NORMAL. DURING T/R OPERATION, LEAK SUSPECT LEFT CENTER ACTUATOR OR LEFT LOWER FLEX SHAFT TUBE TO BE SOURCE OF LEAK. PARTS NIS HNL. SEE MATERIALS LIST. PERFORMED T/R DEACTIVATION RECORDED IN ELOTO AND ADDITIONALLY INSTALLED FLAP LEVER PLACARD AND LEADING EDGE LOCK AS ADDITIONAL SAFETY PRECAUTIONS. LEFT INNER T/R DUCT OPENED TO FACILITATE INSPECTIONS. PERFORMED 29-11-00-862-053. C/B COLLARED AND ELOTO APPLIED. RIGHT HYD RES PRESSURE RELIEVED AND ALL FLEX SHAFT TUBES LOOSENED TO PREPARE FOR 78-31-26/401 TR HYD ACT FLEX SHAFT AND TUBING REMOVAL/INSTALLATION. MAIN AND NOSE GEAR DOOR LOCKS STARTED REMOVE #2 ENG T/R LEFT CENTER ACTUATOR AND LOWER RETRACT TUBE UP TO STEP 5 (M) SUB TASK AMM 78-31-26-024-052-R00. FOUND NEAR I/B MID T/R SLEEVE ACTUATOR. IMAGE ATTACHED INSTALLED. RIGHT HYD SYSTEM IS IN AN OPEN STATE. COMPLETED REMOVAL OF T/R LEFT CENTER ACTUATOR. ADJUSTED AND INSTALLED NEW ACTUATOR, LOWER EXTEND TUBE ASSY. AND FLEXIBLE SHAFT DRIVE. IAW AMM TASK 78-31-26-404-004-R00. PUSHED CIRCUIT BREAKERS AND REACTIVATED T/R SYSTEM. IAW AMM TASK ACTUATOR, SYNCH OFF 19-7831-9-0003 1103 ON 19-7831-9-0003 0358 ACTUATOR, SYNCH OFF 19-7831-9-0003 1103 ON 0000 78-31-00-912-023-R04. PERFORMED OPS CHE

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