What it covers
The systems which indicate temperature, pressure, control positions and warning indications of turbine engine compressor bleed air systems in turbine engines. Typical parts are transmitter, sensor, indicator, lamp, pressure switch, etc.
Service difficulty reports · 108
Reports filed under 7540, newest first.
| 1995 | 5 |
|---|---|
| 1996 | 4 |
| 1997 | 11 |
| 1998 | 8 |
| 1999 | 4 |
| 2000 | 5 |
| 2001 | 6 |
| 2002 | 4 |
| 2003 | 3 |
| 2004 | 5 |
| 2005 | 5 |
| 2006 | 7 |
| 2007 | 2 |
| 2008 | 1 |
| 2009 | 1 |
| 2010 | 3 |
| 2011 | 6 |
| 2012 | 4 |
| 2013 | 1 |
| 2014 | 1 |
| 2015 | 2 |
| 2016 | 3 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 4 |
| 2022 | 1 |
| 2023 | 2 |
| 2025 | 2 |
| 2026 | 1 |
SDR SIMA20261008001Warning Message · illuminatedDURING FLIGHT AT FL210, BLEED 1 LEAK EICAS AND ASSOCIATED YELLOW BAR ON BLEED 1 PUSH SWITCH. RAN QRH. EICAS REMAINED AFTER SHUTTING OFF BLEED 1 AND CROSSBLEED. AFTER SHUTTING OFF BLEED 2 EICAS WENT AWAY. BLEED 1 FAIL EICAS APPEARED SOON AFTER. DID NOT PUSH IN SDR AALA202508197007Sensor · failedAIRCRAFT WAS GROUNDED: AN EMERGENCY WAS NOT DECLARED DUE TO: BLEED TRIP LIGHT ILLUMINATED IN CLIMB. AIRCRAFT DIVERTED TO AND LANDED SAFELY AT CLT. TROUBLESHOT PER FIM 36-10-00-810-809. REPLACED ENGINE NUMBER 2 PRECOOLER CONTROL VALVE SENSOR. PER AMM 36-12-03-4SDR CALA2025060305220Thermocouple · faultyEGT EXCEEDENCE ENG R DURING INITIAL CLIMB. RE DUCED THRUST EGT N ORML FAULT MESSAGE 75-50802 WAS SHOWN ON MAT. TCA THERMOCOUPLE PROBE TEMPERATURE RANGE CH B HAS BEEN REMOVED AND REPLACED. MESSAGE IS NO LONGER ACTIVE. POWERPLANT TEST PASSED. REF AMM 75-25-07
See all 108 reports