# SDR CALA2026062217274

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 21, 2026
- Submitted: June 24, 2026
- Operation: Air carrier
- Aircraft: [N66828](https://openairdocs.org/aircraft/N66828), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 44580
- Aircraft time: 38,135 hours, 14,246 cycles
- System (JASC): [2610 · Detection System](https://openairdocs.org/jasc/2610)
- Part: Duct
- Part number: 332A239045
- Condition: Cracked
- Location: Nr 2 Engine
- Stage of operation: CL
- How discovered: O
- Nature of condition: M, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026062217274

## Discrepancy

NUMBER 1 ENG OVERHEAT.  DEBRIEF FLIGHT CREW, NO OVERWEIGHT LANDING. DURING CLIMB 3500-4000FT ENG 1 OVERHEAT ILLUMINATED. REDUCED N1 BELOW 50% OVERHEAT LIGHT EXTINGUISHED.  PERFORMED CLIMB AGAIN & AT HIGH POWER LEVELS OVERHEAT WOULD ILLUMINATE. GVI OF COWLING HAD EVICENCE OF SOOT BTWN FAN & CORE COWL OTBD SIDE.  CREW REPORTED REDUCED THRUST DURING CLIMB OUT TO EXTINGUISH LIGHT IAW NON-NORMALS PROCEDURE. OVERHEAT LIGHT ILLUMINATED AGAIN WHEN THRUST ADVANCED OVER 60% N1. REDUCED THROTTLE TO IDLE POWER FOR RETURN TO IAH.  INSPECT ENG FOR PNEUMATIC LEAKAGE IAW FIM 26-10 TASK 811 FAULT ISOLATION PROCEDURE.  PERFORMED BITE TEST IAW FIM 26-10 TASK 811, PASSED. TEST IAW 26-10 TASK 801, PASSED.  PERFORMED ENG BLEED AIR LEAK CHK IAW AMM 36-11-00-700-802, FOUND PRSOV LEAKING AIR PERFROMED ENG BLEED AIR LEAK CHKD IAW AMM 36-11-00-700-802, FOUND DUCT PRECOOLER DUCT ASSY CRACKED,  REMOVED CRACKED COWL ANTI ICE DUCT IAW PBM 71-00-02 FIG 13-1. REPLACED 12 O`CLOCK STRUT COWL ANTI ICE DUCT & REINSTALLED 12 OCLOCK STRUT IAW P/P BUILD UP MANUAL 71-00-02.

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