Communication failure results in tower's use of green light for landing clearance.

Attributes
ACN	440580
Time
Date	199906
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : bwi.airport
State Reference	MD
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Controlling Facilities	tower : bwi.tower
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 16000 flight time type : 2500
ASRS Report	440580
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : multi engine pilot : instrument
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	FAA Aircraft
Primary Problem	Aircraft

Narrative:

Communication problem on final, tower gave green light. Landed.

Original NASA ASRS Text

Title: COM FAILURE RESULTS IN TWR'S USE OF GREEN LIGHT FOR LNDG CLRNC.

Narrative: COM PROB ON FINAL, TWR GAVE GREEN LIGHT. LANDED.

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.