 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
DC9-50 aircraft on takeoff roll had low EPR on right engine and N1 of 103%. Takeoff aborted. Reporter has had no feedback from company on cause.
| Attributes | |
| ACN | 401490 |
| Time | |
| Date | 199805 |
| Day | Fri |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : dtw |
| State Reference | MI |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : pmp |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 50 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | climbout : takeoff other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 10000 flight time type : 1000 |
| ASRS Report | 401490 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : rejected takeoff flight crew : declared emergency |
| Consequence | Other Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
Aborted takeoff. Unable to achieve target thrust on right engine. Left engine ok at 2.10. Right throttle at mechanism stop approximately 3 or 4 knobs' width ahead of left throttle. Only got about 1.8 EPR. Right N1 peaked at 103% momentarily. Aborted takeoff at 60 KIAS. Maximum speed 80 KIAS. Smooth deceleration and taxi back. Flight canceled. Passenger rerted. Takeoff gross weight approximately 125000 pounds. Callback conversation with reporter revealed the following information: reporter captain had not learned what caused the engine problem, though, when talking to a mechanic after he returned to the gate, the mechanic mentioned something about the PT7 probe. There had been maintenance action on the engine but reporter didn't know if it had been done just prior to his flight. He was going to contact his company and let ASRS know what they found.
Original NASA ASRS Text
Title: DC9-50 ACFT ON TKOF ROLL HAD LOW EPR ON R ENG AND N1 OF 103%. TKOF ABORTED. RPTR HAS HAD NO FEEDBACK FROM COMPANY ON CAUSE.
Narrative: ABORTED TKOF. UNABLE TO ACHIEVE TARGET THRUST ON R ENG. L ENG OK AT 2.10. R THROTTLE AT MECHANISM STOP APPROX 3 OR 4 KNOBS' WIDTH AHEAD OF L THROTTLE. ONLY GOT ABOUT 1.8 EPR. R N1 PEAKED AT 103% MOMENTARILY. ABORTED TKOF AT 60 KIAS. MAX SPD 80 KIAS. SMOOTH DECELERATION AND TAXI BACK. FLT CANCELED. PAX RERTED. TKOF GROSS WT APPROX 125000 LBS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR CAPT HAD NOT LEARNED WHAT CAUSED THE ENG PROB, THOUGH, WHEN TALKING TO A MECH AFTER HE RETURNED TO THE GATE, THE MECH MENTIONED SOMETHING ABOUT THE PT7 PROBE. THERE HAD BEEN MAINT ACTION ON THE ENG BUT RPTR DIDN'T KNOW IF IT HAD BEEN DONE JUST PRIOR TO HIS FLT. HE WAS GOING TO CONTACT HIS COMPANY AND LET ASRS KNOW WHAT THEY FOUND.
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.