# SDR SIMA20150418002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 18, 2015
- Submitted: April 20, 2015
- Operation: Air carrier
- Aircraft: [N826AE](https://openairdocs.org/aircraft/N826AE), registered now
- Make and model: Emb EMB-135KL
- Registry model: [EMB EMB-135KL](https://openairdocs.org/model/embraer-emb-135kl) (OpenAirDocs)
- Aircraft serial: 145592
- Aircraft time: 31,257 hours, 27,082 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Duct
- Part number: 2099L021100
- Part serial: 02080
- Condition: Broken
- Location: Ac Bay
- Stage of operation: UK
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20150418002

## Discrepancy

AIR CONDITIONING PACKS COULD NOT SUPPLY ENOUGH AIR FOR AIR CONDITIONING OR PRESSURIZATION.  COULD NOT MAINTAIN REQUIRED CABIN ALTITUDE.  TRANSFERRED TO NRWC 826-DFW-01971.  FOUND LT RAM AIR DUCT BROKEN & LT RAM AIR CHECK VLV BACKWARD INSTALLED.  R & R LT RAM AIR DUCT ASSEMBLY.  INSTALLED LT RAM AIR VLV CORRECTLY IAW AMM 21-25-02. PERFORMED ACFT SYS, OPERATIONS CHECKED IAW AMM 21-51-00 & PRESS SYS.  OPERATIONS CHECKED IAW AMM 21-31-00.  ALL CHECKED GOOD.

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