B737 first officer reported that numerous distractions prior to departure resulted in takeoff with b...

Attributes
ACN	1711355
Time
Date	201912
Local Time Of Day	1801-2400
Place
Locale Reference	F11.TRACON
State Reference	FL
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Climb Initial Climb
Flight Plan	IFR
Component
Aircraft Component	Pneumatic Valve/Bleed Valve
Person 1
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 116 Flight Crew Type 447
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy

Narrative:

Last day of a four day trip. Flight was canceled from previous day due to flight crew timing out. Time out had come from return to gate; aircraft swap from 'feel diff psi' light in ZZZ and weather delay/holding on arrival at ZZZ1. Flight had 16 souls on board. On taxi out dispatch contacted twice. First for takeoff data due to [system] calculation errors; then for 26;000+ lower than planned zero fuel weight. Normal preflight taxi and takeoff. Passing 10;000 ft. Cabin alt light and horn came on. Pilot flying leveled off at 11;000 ft. And we requested descent to 10;000 ft. For pressurization issue. Both engine bleed air valves discovered closed. Opened engine bleed air valves and restored cabin pressurization. Once pressurization stable proceeded on climb out and concluded flight segment with no other abnormalities. Completed a thorough crew debrief identifying failure of pilot flying to note bleed air valve position on panel preflight; pilot monitoring failure to note bleed air valve position on before takeoff check list and after takeoff checklist.

Original NASA ASRS Text

Title: B737 First Officer reported that numerous distractions prior to departure resulted in takeoff with bleed air valves incorrectly configured.

Narrative: Last day of a four day trip. Flight was canceled from previous day due to flight crew timing out. Time out had come from return to gate; aircraft swap from 'Feel Diff PSI' light in ZZZ and weather delay/holding on arrival at ZZZ1. Flight had 16 souls on board. On taxi out Dispatch contacted twice. First for takeoff data due to [system] calculation errors; then for 26;000+ lower than planned zero fuel weight. Normal preflight taxi and takeoff. Passing 10;000 ft. cabin alt light and horn came on. Pilot Flying leveled off at 11;000 ft. and we requested descent to 10;000 ft. for pressurization issue. Both engine bleed air valves discovered closed. Opened Engine bleed air valves and restored cabin pressurization. Once pressurization stable proceeded on climb out and concluded flight segment with no other abnormalities. Completed a thorough crew debrief identifying failure of pilot flying to note bleed air valve position on panel preflight; Pilot Monitoring failure to note bleed air valve position on before takeoff check list and after takeoff checklist.

Data retrieved from NASA's ASRS site 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.

B737 first officer reported that numerous distractions prior to departure resulted in takeoff with bleed air valves incorrectly configured.