# SDR DALA2024053005661

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 29, 2024
- Submitted: May 30, 2024
- Operation: Air carrier
- Aircraft: [N877DN](https://openairdocs.org/aircraft/N877DN), registered now
- Make and model: Boeing 737932ER
- Aircraft serial: 31988
- Aircraft time: 21,105 hours, 7,982 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Fumes
- Location: Cabin
- Stage of operation: NR
- How discovered: 9
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2024053005661

## Discrepancy

(LOG 4283678) AT 2000' AGL, "EQUIP COOLING EXHAUST OFF" LIGHT ILLUMINATED. LIGHT CLEARED 1 MINUTE LATER CHANGE IN SOUND NOTEABLE. ON ROLLOUT ACRID BURNING SMELL LASTED 90 SECONDS IN COCKPIT ONLY. T/S ACRID BURNING SMELL IN COCKPIT PER B737 FIM 21-00-00-810-806 RAN APU & LEFT PACK ON APU BLEED AIR, INSPECTED APU INLET FOR FLUID CONTAMINATION, CHECKED HYD SYSTEM SERVICING, INSPECTED EQUIPMENT COOLING FANS FOR OPERATION AND ODOR. NO DEFECTS OR DISCREPANCIES NOTED. R/R RECIRC AIR FILTERS PER B737 AMM 21-25.

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