# SDR ASAA2016062717186

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 27, 2016
- Submitted: June 29, 2016
- Operation: Air carrier
- Aircraft: [N559AS](https://openairdocs.org/aircraft/N559AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35178
- Aircraft time: 36,111 hours, 10,767 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7330 · Engine Fuel Indicating System](https://openairdocs.org/jasc/7330)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: IN
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2016062717186

## Discrepancy

2 FAULTS ARE SHOWN ON THE FMC CDU 73-31631 AND 73-31632.  ACFT GROUNDED.  PERFORMED FIM 73-28, TASK 802, ADIRU TOTAL PRESSURE DATA IS MISSING FROM A DEU-FAULT ISOLATION.  EEC 1 AND EEC 2 PASS WITH NO MAINTENANCE MESSAGES AND BOTH SHOW A VALID TOTAL PRESSURE FROM ADIRU 1 AND ADIRU  2.  PERFORMED GOOD REPAIR CONFIRMATION IAW FIM 73-28, TASK 802, STEP H.

---
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.