An air carrier light transport had a flickering main entry door warning light and return land.

Attributes
ACN	246665
Time
Date	199307
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mia
State Reference	FL
Altitude	msl bound lower : 1500 msl bound upper : 1500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mia
Operator	common carrier : air carrier
Make Model Name	Light Transport
Navigation In Use	Other Other
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 8000 flight time type : 3500
ASRS Report	246665
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	none taken : unable other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

In checking indicator lights during normal pilot scan, observed a forward door light flickering. The light was out at takeoff and our aural warning unit did not indicate a door problem. In the interest of safety, the aircraft was landed in miami again and the system and door were visually checked. System check satisfactory and flight departed without further incident.

Original NASA ASRS Text

Title: AN ACR LTT HAD A FLICKERING MAIN ENTRY DOOR WARNING LIGHT AND RETURN LAND.

Narrative: IN CHKING INDICATOR LIGHTS DURING NORMAL PLT SCAN, OBSERVED A FORWARD DOOR LIGHT FLICKERING. THE LIGHT WAS OUT AT TKOF AND OUR AURAL WARNING UNIT DID NOT INDICATE A DOOR PROB. IN THE INTEREST OF SAFETY, THE ACFT WAS LANDED IN MIAMI AGAIN AND THE SYS AND DOOR WERE VISUALLY CHKED. SYS CHK SATISFACTORY AND FLT DEPARTED WITHOUT FURTHER INCIDENT.

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.