B737-800 crew aborted takeoff at about 70-75 KTS because the master caution light illuminated.

Attributes
ACN	610110
Time
Date	200403
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mmun.airport
State Reference	FO
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
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	610110
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : commercial pilot : instrument
ASRS Report	610111
Events
Anomaly	aircraft equipment problem : less severe non adherence : company policies non adherence : published procedure
Independent Detector	aircraft equipment other aircraft equipment : master caution light other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance flight crew : rejected takeoff none taken : detected after the fact
Consequence	other
Supplementary
Problem Areas	Company Flight Crew Human Performance Aircraft
Primary Problem	Company

Narrative:

Aborted takeoff in mmun due to a master caution light coming on at 70 KTS. Light was related to forward entry door not being properly latched. After exiting the runway, door was secured. Proceeded with no further problems.

Original NASA ASRS Text

Title: B737-800 CREW ABORTED TKOF AT ABOUT 70-75 KTS BECAUSE THE MASTER CAUTION LIGHT ILLUMINATED.

Narrative: ABORTED TKOF IN MMUN DUE TO A MASTER CAUTION LIGHT COMING ON AT 70 KTS. LIGHT WAS RELATED TO FORWARD ENTRY DOOR NOT BEING PROPERLY LATCHED. AFTER EXITING THE RWY, DOOR WAS SECURED. PROCEEDED WITH NO FURTHER PROBS.

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.