The first officer's sliding window opened on takeoff on an air carrier large transport.

Attributes
ACN	258751
Time
Date	199312
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : slc
State Reference	UT
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : private pilot : commercial pilot : atp
Experience	flight time last 90 days : 230 flight time total : 15000 flight time type : 10000
ASRS Report	258751
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : private pilot : instrument pilot : flight engineer pilot : commercial
Experience	flight time last 90 days : 117 flight time total : 4400 flight time type : 2200
ASRS Report	258989
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During takeoff roll at slc, air carrier large transport reached 90 KTS and the copilot's sliding window came open. The takeoff was aborted. Appropriate brake cooling was noted for time, gross, and speed. The aircraft was returned to the gate and appropriate maintenance write-ups were entered in the logbook. After inspection by maintenance, the window was found to 'operations check' ok and the flight was redispatched to ord. Note: the takeoff was performed with the pressurization packs off due to snow and slush on the runway. (A normal procedure for these conditions in order to not ingest slush into the pack cooling doors.) the fact that the aircraft was unpressurized for takeoff allowed the sliding window (if partially ajar) to open. The same aircraft and air crew performed a pressurized takeoff in boise to slc. The copilot preflted the window in boi, but possibly did not pull on it hard enough to check security to dislodge a partially ajar lock. No aircraft damage or personal injury occurred.

Original NASA ASRS Text

Title: THE FO'S SLIDING WINDOW OPENED ON TKOF ON AN ACR LGT.

Narrative: DURING TKOF ROLL AT SLC, ACR LGT REACHED 90 KTS AND THE COPLT'S SLIDING WINDOW CAME OPEN. THE TKOF WAS ABORTED. APPROPRIATE BRAKE COOLING WAS NOTED FOR TIME, GROSS, AND SPD. THE ACFT WAS RETURNED TO THE GATE AND APPROPRIATE MAINT WRITE-UPS WERE ENTERED IN THE LOGBOOK. AFTER INSPECTION BY MAINT, THE WINDOW WAS FOUND TO 'OPS CHK' OK AND THE FLT WAS REDISPATCHED TO ORD. NOTE: THE TKOF WAS PERFORMED WITH THE PRESSURIZATION PACKS OFF DUE TO SNOW AND SLUSH ON THE RWY. (A NORMAL PROC FOR THESE CONDITIONS IN ORDER TO NOT INGEST SLUSH INTO THE PACK COOLING DOORS.) THE FACT THAT THE ACFT WAS UNPRESSURIZED FOR TKOF ALLOWED THE SLIDING WINDOW (IF PARTIALLY AJAR) TO OPEN. THE SAME ACFT AND AIR CREW PERFORMED A PRESSURIZED TKOF IN BOISE TO SLC. THE COPLT PREFLTED THE WINDOW IN BOI, BUT POSSIBLY DID NOT PULL ON IT HARD ENOUGH TO CHK SECURITY TO DISLODGE A PARTIALLY AJAR LOCK. NO ACFT DAMAGE OR PERSONAL INJURY OCCURRED.

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.