# SDR AALA202603021180

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 27, 2026
- Submitted: March 3, 2026
- Operation: Air carrier
- Aircraft: [N880NN](https://openairdocs.org/aircraft/N880NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 40769
- Aircraft time: 41,196 hours, 17,837 cycles
- System (JASC): [5210 · Passenger/Crew Doors](https://openairdocs.org/jasc/5210)
- Part: Door Seal
- Condition: Leaking
- Location: Zone 800
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202603021180

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS NOT DECLARED DUE TO: DURING CLIMB, UNABLE TO MAINTAIN CABIN PRESSURE. AIRCRAFT AIR INTERRUPTED BACK TO AND LANDED SAFELY AT BOS. ACCOMPLISH GVI OF OFV FOR OBSTRUCTION. NONE FOUND. ACCOMPLISH DCPC BITE ON BOTH CONTROLLERS PER FIM 21-31-00-810-801. FOUND DCPC 2 WITH LOW FLOW OR HIGH LEAKAGE. BITE CHECK OF BOTH CABIN TEMPERATURE CONTROLLERS IAW AMM 21-61-00. NO FAULTS FOUND. FOUND SLIGHT LEAK AT R1 DOOR SEAL, CLEANED DOOR SEAL (AALA202603021180) IAW AMM 52-41-00. PRESSURIZED ACFT WITH ENGINES RUNNING TO 4 PSI. N2S MATCHED AT 58.8%. FOUND CABIN TEMP SENSOR FILTERS CLOGGED WITH DUST, CLEANED TEMPERATURE SENSOR (AALA202603026339) PER AMM 21-61-10. ACCOMPLISH GVI OF BOTH PACK BAYS. NO DEFECTS NOTED. ACCOMPLISHED CABIN PRESSURIZE LEAK TEST 4 TIMES PER AMM 05-51-91-790-801. ALL TESTS PASS.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.