Medium large transport unable to pressurize during climb.

Attributes
ACN	260033
Time
Date	199312
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : cle
State Reference	OH
Altitude	msl bound lower : 1000 msl bound upper : 1000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tower : cle
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : instrument
Experience	flight time last 90 days : 250 flight time total : 8000 flight time type : 3200
ASRS Report	260033
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : atp
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

Unable to pressurize aircraft after takeoff. Returned to airport for maintenance. Technician found electronic compartment door open and door annunciator inoperative. Suspect that door was left open after copilot's preflight and a faulty door switch failed to alert crew.

Original NASA ASRS Text

Title: MLG UNABLE TO PRESSURIZE DURING CLB.

Narrative: UNABLE TO PRESSURIZE ACFT AFTER TKOF. RETURNED TO ARPT FOR MAINT. TECHNICIAN FOUND ELECTRONIC COMPARTMENT DOOR OPEN AND DOOR ANNUNCIATOR INOP. SUSPECT THAT DOOR WAS LEFT OPEN AFTER COPLT'S PREFLT AND A FAULTY DOOR SWITCH FAILED TO ALERT CREW.

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.