Upon takeoff; a B737-800 aircraft master caution light illuminated with a fwd cabin door light on. T...

Attributes
ACN	757896
Time
Date	200710
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	ground : takeoff roll
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	757896
Person 2
Affiliation	company : air carrier
Function	other personnel other
Events
Anomaly	aircraft equipment problem : critical aircraft equipment problem : less severe
Independent Detector	aircraft equipment other aircraft equipment : master caution on other flight crewa
Resolutory Action	flight crew : diverted to another airport
Consequence	other
Supplementary
Problem Areas	Cabin Crew Human Performance Flight Crew Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

Upon takeoff out of ZZZ at 100 KTS the master caution light illuminated with the forward cabin door light illumination. We continued the takeoff and the light extinguished. Upon leveloff the captain checked with the #1 flight attendant and checked door handle down. Door handle could not be selected all the way down. We communicated with maintenance control and they sent a message advising to not fly under these conditions because the door could come open. We diverted to ZZZ1 and had maintenance look at the situation and after further review with mechanics and maintenance control we proceeded to destination ZZZ2. Callback conversation with reporter revealed the following information: reporter stated the fwd door closed and latched properly when operated at the diverted airport. His company has emphasized a policy for the pilots to inform the cabin flight attendants prior to takeoff to recheck the cabin door handles for proper latching. Reporter also stated his carrier has had several rejected takeoffs) due to cabin door warning lights coming on during takeoff; resulting in blown tires; overheated brakes and aircraft damage. This is a major safety concern and financial issue for his carrier.

Original NASA ASRS Text

Title: UPON TKOF; A B737-800 ACFT MASTER CAUTION LIGHT ILLUMINATED WITH A FWD CABIN DOOR LIGHT ON. TKOF CONTINUED; LIGHT EXTINGUISHED. DOOR HANDLE FOUND NOT FULLY CLOSED. ACFT DIVERTED ENROUTE.

Narrative: UPON TKOF OUT OF ZZZ AT 100 KTS THE MASTER CAUTION LIGHT ILLUMINATED WITH THE FORWARD CABIN DOOR LIGHT ILLUMINATION. WE CONTINUED THE TKOF AND THE LIGHT EXTINGUISHED. UPON LEVELOFF THE CAPT CHKED WITH THE #1 FLT ATTENDANT AND CHKED DOOR HANDLE DOWN. DOOR HANDLE COULD NOT BE SELECTED ALL THE WAY DOWN. WE COMMUNICATED WITH MAINT CTL AND THEY SENT A MESSAGE ADVISING TO NOT FLY UNDER THESE CONDITIONS BECAUSE THE DOOR COULD COME OPEN. WE DIVERTED TO ZZZ1 AND HAD MAINT LOOK AT THE SITUATION AND AFTER FURTHER REVIEW WITH MECHS AND MAINT CTL WE PROCEEDED TO DEST ZZZ2. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: REPORTER STATED THE FWD DOOR CLOSED AND LATCHED PROPERLY WHEN OPERATED AT THE DIVERTED AIRPORT. HIS COMPANY HAS EMPHASIZED A POLICY FOR THE PILOTS TO INFORM THE CABIN FLIGHT ATTENDANTS PRIOR TO TKOF TO RECHECK THE CABIN DOOR HANDLES FOR PROPER LATCHING. REPORTER ALSO STATED HIS CARRIER HAS HAD SEVERAL REJECTED TAKEOFFS) DUE TO CABIN DOOR WARNING LIGHTS COMING ON DURING TKOF; RESULTING IN BLOWN TIRES; OVERHEATED BRAKES AND ACFT DAMAGE. THIS IS A MAJOR SAFETY CONCERN AND FINANCIAL ISSUE FOR HIS CARRIER.

Data retrieved from NASA's ASRS site as of January 2009 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.

Upon takeoff; a B737-800 aircraft master caution light illuminated with a fwd cabin door light on. Takeoff continued; light extinguished. Door handle found not fully closed. Aircraft diverted enroute.