Flight crew of a fokker 100 landed overweight when returning to land due to pressurization problem.

Attributes
ACN	448730
Time
Date	199909
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ord.airport
State Reference	IL
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : c90.tracon
Operator	common carrier : air carrier
Make Model Name	Fokker 100
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude landing : roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	448730
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : multi engine pilot : commercial
Events
Anomaly	aircraft equipment problem : critical non adherence other other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : pressurization other flight crewa other flight crewb
Resolutory Action	flight crew : landed as precaution other
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Aircraft would not pressurize after takeoff. Could not gain control of pressurization with manual either. Landed overweight. Landing weight 92700 pounds, sink rate about 200 FPM, touchdown normal. Could not continue flight according to plan.

Original NASA ASRS Text

Title: FLC OF A FOKKER 100 LANDED OVERWT WHEN RETURNING TO LAND DUE TO PRESSURIZATION PROB.

Narrative: ACFT WOULD NOT PRESSURIZE AFTER TKOF. COULD NOT GAIN CTL OF PRESSURIZATION WITH MANUAL EITHER. LANDED OVERWT. LNDG WT 92700 LBS, SINK RATE ABOUT 200 FPM, TOUCHDOWN NORMAL. COULD NOT CONTINUE FLT ACCORDING TO PLAN.

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.