 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
An air carrier CA212 crew reports that they aborted a takeoff because of a high torque reading, then had to return land when it happened again when airborne.
| Attributes | |
| ACN | 360376 |
| Time | |
| Date | 199702 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : mkk |
| State Reference | HI |
| Altitude | agl bound lower : 0 agl bound upper : 300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : mkk tower : lyh |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 135 |
| Flight Phase | climbout : initial other other |
| Route In Use | enroute : pacific |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 65 flight time total : 2900 flight time type : 60 |
| ASRS Report | 360376 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 235 flight time total : 9327 flight time type : 7137 |
| ASRS Report | 359988 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : rejected takeoff none taken : unable other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
During takeoff roll, I noticed the torque on the right engine rise from 45 pounds to 50 pounds. I immediately pointed it out and advised the captain. He aborted the takeoff. We were below V1. Not knowing if the captain's hand pushed the lever forward on the right engine. We ran the engine up statically to 45 pounds and didn't notice anything unusual. We taxied back to the runway and again statically ran both engines up to 45 pounds. We took off and, about 300 ft AGL, the right engine torque began to rise again from 45 pounds to 50 pounds and the propeller RPM began to fall off, while the propeller lever was at full increase. The captain said that he was turning back to the airport and I told the tower our intentions. On his command, I reduced the right engine propeller lever to minimum governing speed. The propeller RPM began to increase from 50% to 75%. We completed our landing checklist and landed the aircraft safely.
Original NASA ASRS Text
Title: AN ACR CA212 CREW RPTS THAT THEY ABORTED A TKOF BECAUSE OF A HIGH TORQUE READING, THEN HAD TO RETURN LAND WHEN IT HAPPENED AGAIN WHEN AIRBORNE.
Narrative: DURING TKOF ROLL, I NOTICED THE TORQUE ON THE R ENG RISE FROM 45 LBS TO 50 LBS. I IMMEDIATELY POINTED IT OUT AND ADVISED THE CAPT. HE ABORTED THE TKOF. WE WERE BELOW V1. NOT KNOWING IF THE CAPT'S HAND PUSHED THE LEVER FORWARD ON THE R ENG. WE RAN THE ENG UP STATICALLY TO 45 LBS AND DIDN'T NOTICE ANYTHING UNUSUAL. WE TAXIED BACK TO THE RWY AND AGAIN STATICALLY RAN BOTH ENGS UP TO 45 LBS. WE TOOK OFF AND, ABOUT 300 FT AGL, THE R ENG TORQUE BEGAN TO RISE AGAIN FROM 45 LBS TO 50 LBS AND THE PROP RPM BEGAN TO FALL OFF, WHILE THE PROP LEVER WAS AT FULL INCREASE. THE CAPT SAID THAT HE WAS TURNING BACK TO THE ARPT AND I TOLD THE TWR OUR INTENTIONS. ON HIS COMMAND, I REDUCED THE R ENG PROP LEVER TO MINIMUM GOVERNING SPD. THE PROP RPM BEGAN TO INCREASE FROM 50% TO 75%. WE COMPLETED OUR LNDG CHKLIST AND LANDED THE ACFT SAFELY.
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.