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A B747-100 departs from ord, il, and experiences engine vibration. Air carrier company wants aircraft flown to jfk for engine inspection. Flight crew flies aircraft to jfk.
| Attributes | |
| ACN | 400857 |
| Time | |
| Date | 199804 |
| Day | Thu |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : ord |
| State Reference | IL |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dawn |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B747-100 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | climbout : initial climbout : takeoff |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : flight engineer |
| Experience | flight time last 90 days : 200 flight time total : 15000 flight time type : 6500 |
| ASRS Report | 400854 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 9000 flight time type : 600 |
| ASRS Report | 400854 |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : diverted to another airport |
| Consequence | other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
On takeoff from ord at rotation, felt vibration. As we climbed, vibration increased. Phone patch via commercial radio to operations control at XA35 told to divert to jfk. At XB12 operations control okayed overweight landing. Landing at jfk accomplished at 645,000 pounds, no damage to aircraft. Callback conversation with reporter revealed the following information: reporter stated the vibration did not occur until liftoff from the runway. Vibration lasted during climb but subsided at cruise when the power was reduced. Following instructions from their dispatcher they diverted from their destination and landed at jfk. An engine inspection took place and it was determined that the fan blades were rubbing against the inside of the engine casing. Flight crew continued on to destination in another aircraft. Their aircraft stayed for two days while the engine was changed.
Original NASA ASRS Text
Title: A B747-100 DEPARTS FROM ORD, IL, AND EXPERIENCES ENG VIBRATION. ACR COMPANY WANTS ACFT FLOWN TO JFK FOR ENG INSPECTION. FLC FLIES ACFT TO JFK.
Narrative: ON TKOF FROM ORD AT ROTATION, FELT VIBRATION. AS WE CLBED, VIBRATION INCREASED. PHONE PATCH VIA COMMERCIAL RADIO TO OPS CTL AT XA35 TOLD TO DIVERT TO JFK. AT XB12 OPS CTL OKAYED OVERWEIGHT LNDG. LNDG AT JFK ACCOMPLISHED AT 645,000 LBS, NO DAMAGE TO ACFT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THE VIBRATION DID NOT OCCUR UNTIL LIFTOFF FROM THE RWY. VIBRATION LASTED DURING CLB BUT SUBSIDED AT CRUISE WHEN THE PWR WAS REDUCED. FOLLOWING INSTRUCTIONS FROM THEIR DISPATCHER THEY DIVERTED FROM THEIR DESTINATION AND LANDED AT JFK. AN ENG INSPECTION TOOK PLACE AND IT WAS DETERMINED THAT THE FAN BLADES WERE RUBBING AGAINST THE INSIDE OF THE ENG CASING. FLC CONTINUED ON TO DESTINATION IN ANOTHER ACFT. THEIR ACFT STAYED FOR TWO DAYS WHILE THE ENG WAS CHANGED.
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.