Foreign object damage ice during takeoff procedure. Runway condition ice snow.

Attributes
ACN	261628
Time
Date	199401
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : bwi
State Reference	MD
Altitude	agl bound lower : 0 agl bound upper : 17000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : bwi
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff cruise other landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 170 flight time total : 11000 flight time type : 170
ASRS Report	261628
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 : 170 flight time total : 9500 flight time type : 170
ASRS Report	261714
Events
Anomaly	aircraft equipment problem : critical conflict : ground critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	other
Supplementary
Primary Problem	Airport
Air Traffic Incident	other
Situations
Airport	other physical facility procedure or policy : unspecified

Narrative:

Departing baltimore with fair to poor runway conditions and at aircraft rotation, felt a significant bump on the runway and an associated rise in N1. Engine was producing thrust but had a humming noise. Retarded engine to idle and diverted to dtw (for it had the best report of good braking action plus VMC). The 'bump' felt was at the intersection of runway 33 and runway 28 and I believe it to be caused by the airport commission as it was plowing the intersecting runway. The aircraft engine sustained damage by foreign object damage caused by plowed ice on the runway. The engine was subsequently changed due to rotor compressor damage. Supplemental information from acn 261714: after reducing power to idle on buzzing engine, began diversion to nearest suitable airport. Due to runway conditions (icy and braking actions) we eliminated close in airports and settled on only good alternative (per WX, braking action, winds etc). We settled on dtw. Landed ok.

Original NASA ASRS Text

Title: FOREIGN OBJECT DAMAGE ICE DURING TKOF PROC. RWY CONDITION ICE SNOW.

Narrative: DEPARTING BALTIMORE WITH FAIR TO POOR RWY CONDITIONS AND AT ACFT ROTATION, FELT A SIGNIFICANT BUMP ON THE RWY AND AN ASSOCIATED RISE IN N1. ENG WAS PRODUCING THRUST BUT HAD A HUMMING NOISE. RETARDED ENG TO IDLE AND DIVERTED TO DTW (FOR IT HAD THE BEST RPT OF GOOD BRAKING ACTION PLUS VMC). THE 'BUMP' FELT WAS AT THE INTXN OF RWY 33 AND RWY 28 AND I BELIEVE IT TO BE CAUSED BY THE ARPT COMMISSION AS IT WAS PLOWING THE INTERSECTING RWY. THE ACFT ENG SUSTAINED DAMAGE BY FOREIGN OBJECT DAMAGE CAUSED BY PLOWED ICE ON THE RWY. THE ENG WAS SUBSEQUENTLY CHANGED DUE TO ROTOR COMPRESSOR DAMAGE. SUPPLEMENTAL INFO FROM ACN 261714: AFTER REDUCING PWR TO IDLE ON BUZZING ENG, BEGAN DIVERSION TO NEAREST SUITABLE ARPT. DUE TO RWY CONDITIONS (ICY AND BRAKING ACTIONS) WE ELIMINATED CLOSE IN ARPTS AND SETTLED ON ONLY GOOD ALTERNATIVE (PER WX, BRAKING ACTION, WINDS ETC). WE SETTLED ON DTW. LANDED OK.

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.