 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Medium large transport improperly deiced leaving enough ice on wings to cause airframe vibration in flight.
| Attributes | |
| ACN | 173252 |
| Time | |
| Date | 199103 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : phl |
| State Reference | PA |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude cruise other ground : preflight |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 225 flight time total : 16000 |
| ASRS Report | 173252 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 6000 flight time type : 1700 |
| ASRS Report | 173236 |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : unable |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Airport |
| Air Traffic Incident | other |
Narrative:
While in cruise, flying between phl and chicago, I felt a low vibration or buffeting in the aircraft. Upon inspection I found what appeared to be patches of ice accumulated on the top portion of the wing. The WX in phl at the time of our departure was 36 degrees with light rain. The aircraft was deiced by our maintenance crew just before departure. Engine anti-ice was turned on after the engines were started and wing heat was used at 1000 afl, per company policy. I feel the aircraft was improperly deiced and inspected by our maintenance crew before leaving phl.
Original NASA ASRS Text
Title: MLG IMPROPERLY DEICED LEAVING ENOUGH ICE ON WINGS TO CAUSE AIRFRAME VIBRATION IN FLT.
Narrative: WHILE IN CRUISE, FLYING BTWN PHL AND CHICAGO, I FELT A LOW VIBRATION OR BUFFETING IN THE ACFT. UPON INSPECTION I FOUND WHAT APPEARED TO BE PATCHES OF ICE ACCUMULATED ON THE TOP PORTION OF THE WING. THE WX IN PHL AT THE TIME OF OUR DEP WAS 36 DEGS WITH LIGHT RAIN. THE ACFT WAS DEICED BY OUR MAINT CREW JUST BEFORE DEP. ENG ANTI-ICE WAS TURNED ON AFTER THE ENGS WERE STARTED AND WING HEAT WAS USED AT 1000 AFL, PER COMPANY POLICY. I FEEL THE ACFT WAS IMPROPERLY DEICED AND INSPECTED BY OUR MAINT CREW BEFORE LEAVING PHL.
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.