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A B737-200 in climb at FL240 diverted due to #2 engine overheat warning caused by a faulty engine fire and overheat accessory unit.
| Attributes | |
| ACN | 492520 |
| Time | |
| Date | 200011 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : elp.airport |
| State Reference | TX |
| Altitude | msl bound lower : 20000 msl bound upper : 24000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zab.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute airway : j4.airway |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 245 flight time total : 7000 flight time type : 245 |
| ASRS Report | 492520 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : #2 engine overheat warning other flight crewa other flight crewb |
| Resolutory Action | flight crew : diverted to another airport |
| Consequence | other |
| Supplementary | |
| Problem Areas | Environmental Factor Flight Crew Human Performance Chart Or Publication Aircraft |
| Primary Problem | Aircraft |
Narrative:
#2 engine overheat light illuminated during climb out from elp. Aircraft was leveled off at FL240 to investigate. Initially, overheat light was momentarily on, then off again. Engine thrust lever was reduced to idle, with all reading being normal. The only elevated reading was 'engine oil temperature' due to reduced fuel flow to heat exchanger. We decided to return to the blocks el paso, approximately 20 mins away. QRH reviewed, ATC and company coordination for return to el paso delayed recognition of overheat light going to 'illuminated' steady. This resulted in a delayed decision to run second part of checklist which would call for engine shutdown. Aircraft configured for single engine landing per checklist notes. Aircraft landed at elp without incident. Emergency equipment inspected (aircraft) prior to taxi/gate (engine secured). Initial maintenance inspection pointed to 'bad sensor box.' no indication of overheating in engine.
Original NASA ASRS Text
Title: A B737-200 IN CLB AT FL240 DIVERTED DUE TO #2 ENG OVERHEAT WARNING CAUSED BY A FAULTY ENG FIRE AND OVERHEAT ACCESSORY UNIT.
Narrative: #2 ENG OVERHEAT LIGHT ILLUMINATED DURING CLBOUT FROM ELP. ACFT WAS LEVELED OFF AT FL240 TO INVESTIGATE. INITIALLY, OVERHEAT LIGHT WAS MOMENTARILY ON, THEN OFF AGAIN. ENG THRUST LEVER WAS REDUCED TO IDLE, WITH ALL READING BEING NORMAL. THE ONLY ELEVATED READING WAS 'ENG OIL TEMP' DUE TO REDUCED FUEL FLOW TO HEAT EXCHANGER. WE DECIDED TO RETURN TO THE BLOCKS EL PASO, APPROX 20 MINS AWAY. QRH REVIEWED, ATC AND COMPANY COORD FOR RETURN TO EL PASO DELAYED RECOGNITION OF OVERHEAT LIGHT GOING TO 'ILLUMINATED' STEADY. THIS RESULTED IN A DELAYED DECISION TO RUN SECOND PART OF CHKLIST WHICH WOULD CALL FOR ENG SHUTDOWN. ACFT CONFIGURED FOR SINGLE ENG LNDG PER CHKLIST NOTES. ACFT LANDED AT ELP WITHOUT INCIDENT. EMER EQUIP INSPECTED (ACFT) PRIOR TO TAXI/GATE (ENG SECURED). INITIAL MAINT INSPECTION POINTED TO 'BAD SENSOR BOX.' NO INDICATION OF OVERHEATING IN ENG.
Data retrieved from NASA's ASRS site as of July 2007 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.