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A LR25 right engine fire warning momentarily alerted at cruise but was found to be inoperative after a fire system test so an emergency was declared and the flight returned to the departure airport.
| Attributes | |
| ACN | 993562 |
| Time | |
| Date | 201202 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Learjet 25 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Route In Use | Direct |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Fire/Overheat Warning |
| Person 1 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Instructor Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Engineer |
| Experience | Flight Crew Last 90 Days 10 Flight Crew Total 14000 Flight Crew Type 100 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
After initial level off at FL380; observed a right engine fire light indication for several seconds. Warning then ceased. [We] performed fire system test. Left engine checked ok; but right engine would not fire test. All other engine parameters appeared normal; but reduced right engine to idle as a precaution. [We] declared emergency and requested clearance back to departure airport. [We] requested fire equipment. Landed; shut down right engine and exited runway. Airfield rescue and fire fighters performed a visual check of right engine and said it looked normal. [We] taxied to ramp for maintenance. Found broken fire detection loop.
Original NASA ASRS Text
Title: A LR25 right engine fire warning momentarily alerted at cruise but was found to be inoperative after a fire system test so an emergency was declared and the flight returned to the departure airport.
Narrative: After initial level off at FL380; observed a right Engine Fire light indication for several seconds. Warning then ceased. [We] performed fire system test. Left engine checked OK; but right engine would not fire test. All other engine parameters appeared normal; but reduced right engine to idle as a precaution. [We] declared emergency and requested clearance back to departure airport. [We] requested fire equipment. Landed; shut down right engine and exited runway. Airfield Rescue and Fire Fighters performed a visual check of right engine and said it looked normal. [We] taxied to ramp for maintenance. Found broken fire detection loop.
Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.