Air carrier crew on late start misses checklist item involving pressurization valve. Return to land.

Attributes
ACN	141124
Time
Date	199003
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ord
State Reference	IL
Altitude	msl bound lower : 3000 msl bound upper : 3000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ord tower : ord
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : takeoff climbout : initial landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 50 flight time total : 6000 flight time type : 350
ASRS Report	141124
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe non adherence : published procedure other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Arrival at aircraft late due to late arrival from previous flight. Aircraft had just been towed to gate from hangar. During very hurried preflight we inadvertently left the pressurization valve in manual (which will not pressurize the aircraft). The captain started reading the checklist before I was ready and missed the error. After takeoff we could not pressurize the aircraft, and returned for landing where the error was discovered. Three times during the preflight and checklist reading I wanted to stop the captain and tell him to slow down. But pride kept me from doing this. I feel that the captain was over confident in his attitude about the aircraft. In the future I will not hesitate to tell the captain that I do not like his attitude or functioning in the aircraft. This was a stupid mistake. The captain was stupid and I was stupid.

Original NASA ASRS Text

Title: ACR CREW ON LATE START MISSES CHECKLIST ITEM INVOLVING PRESSURIZATION VALVE. RETURN TO LAND.

Narrative: ARR AT ACFT LATE DUE TO LATE ARR FROM PREVIOUS FLT. ACFT HAD JUST BEEN TOWED TO GATE FROM HANGAR. DURING VERY HURRIED PREFLT WE INADVERTENTLY LEFT THE PRESSURIZATION VALVE IN MANUAL (WHICH WILL NOT PRESSURIZE THE ACFT). THE CAPT STARTED READING THE CHKLIST BEFORE I WAS READY AND MISSED THE ERROR. AFTER TKOF WE COULD NOT PRESSURIZE THE ACFT, AND RETURNED FOR LNDG WHERE THE ERROR WAS DISCOVERED. THREE TIMES DURING THE PREFLT AND CHKLIST READING I WANTED TO STOP THE CAPT AND TELL HIM TO SLOW DOWN. BUT PRIDE KEPT ME FROM DOING THIS. I FEEL THAT THE CAPT WAS OVER CONFIDENT IN HIS ATTITUDE ABOUT THE ACFT. IN THE FUTURE I WILL NOT HESITATE TO TELL THE CAPT THAT I DO NOT LIKE HIS ATTITUDE OR FUNCTIONING IN THE ACFT. THIS WAS A STUPID MISTAKE. THE CAPT WAS STUPID AND I WAS STUPID.

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.