 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
SF34 experiences excessive differential temperatures between engines. Directed to return to departure station for maintenance.
| Attributes | |
| ACN | 726854 |
| Time | |
| Date | 200702 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : m98.tracon |
| State Reference | MN |
| Altitude | msl single value : 17000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : m98.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | SF 340B |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| ASRS Report | 726854 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 726853 |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : egt gauges other flight crewa other flight crewb |
| Resolutory Action | none taken : anomaly accepted other |
| Consequence | other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Aircraft Company |
| Primary Problem | Aircraft |
Narrative:
En route to apn at 17000 ft a trend check was completed and it was determined that there was a 50 degree shift. The pom and QRH was consulted; as well as maintenance. Dispatch became involved in the conversation and about 30 miles south of apn they asked us to return to dtw. I conveyed my concerns and they gave us the fuel burns and stated that it would work with the strong winds aloft. Captain agreed and we turned the aircraft to dtw. We were kept low longer than we anticipated due to a MOA; but climbed to 12000 ft and avoided the ng ranges specified in the pom. The winds aloft were not as strong as we were led to believe; and we contacted dispatch over fnt with our concerns. By the time they responded after being given the information; we were 30 miles north of dtw; and landed with 900 pounds of fuel. It was clear to me that they were interested in one thing -- getting the aircraft to dtw; and not the safest decision; landing in apn. The information we were given led us to believe that we could reach dtw with our reserve (950 pounds) with the winds aloft.
Original NASA ASRS Text
Title: SF34 EXPERIENCES EXCESSIVE DIFFERENTIAL TEMPS BETWEEN ENGINES. DIRECTED TO RETURN TO DEP STATION FOR MAINT.
Narrative: ENRTE TO APN AT 17000 FT A TREND CHK WAS COMPLETED AND IT WAS DETERMINED THAT THERE WAS A 50 DEG SHIFT. THE POM AND QRH WAS CONSULTED; AS WELL AS MAINT. DISPATCH BECAME INVOLVED IN THE CONVERSATION AND ABOUT 30 MILES S OF APN THEY ASKED US TO RETURN TO DTW. I CONVEYED MY CONCERNS AND THEY GAVE US THE FUEL BURNS AND STATED THAT IT WOULD WORK WITH THE STRONG WINDS ALOFT. CAPT AGREED AND WE TURNED THE ACFT TO DTW. WE WERE KEPT LOW LONGER THAN WE ANTICIPATED DUE TO A MOA; BUT CLBED TO 12000 FT AND AVOIDED THE NG RANGES SPECIFIED IN THE POM. THE WINDS ALOFT WERE NOT AS STRONG AS WE WERE LED TO BELIEVE; AND WE CONTACTED DISPATCH OVER FNT WITH OUR CONCERNS. BY THE TIME THEY RESPONDED AFTER BEING GIVEN THE INFO; WE WERE 30 MILES N OF DTW; AND LANDED WITH 900 LBS OF FUEL. IT WAS CLR TO ME THAT THEY WERE INTERESTED IN ONE THING -- GETTING THE ACFT TO DTW; AND NOT THE SAFEST DECISION; LNDG IN APN. THE INFO WE WERE GIVEN LED US TO BELIEVE THAT WE COULD REACH DTW WITH OUR RESERVE (950 LBS) WITH THE WINDS ALOFT.
Data retrieved from NASA's ASRS site as of January 2009 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.