Flight crew of an light transport air carrier aircraft had problem extending the nose gear and executed a go around to determine the problem. Problem solved and the aircraft was landed normally.

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Attributes
ACN	251304
Time
Date	199309
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mco
State Reference	FL
Altitude	agl bound lower : 2500 agl bound upper : 2500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : mco
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	descent : approach landing : go around other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 254 flight time total : 11000 flight time type : 1500
ASRS Report	251304
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : overcame equipment problem other other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Nose landing gear reluctant to downlock, resulting in go around. Both a and B gear indicating system indicated nose gear disagreement with gear handle position (down) and there was not green downlock for nose gear from either a or B system. Left and right main gear functioned normally. Abnormal gear extension procedures were unsuccessful (both electric override and freefall). Finally, by repeating normal gear down method again produced satisfactory downlock. No emergency declared nor assistance requested. Landing was normal.

Original NASA ASRS Text

Title: FLC OF AN LTT ACR ACFT HAD PROB EXTENDING THE NOSE GEAR AND EXECUTED A GAR TO DETERMINE THE PROB. PROB SOLVED AND THE ACFT WAS LANDED NORMALLY.

Narrative: NOSE LNDG GEAR RELUCTANT TO DOWNLOCK, RESULTING IN GAR. BOTH A AND B GEAR INDICATING SYS INDICATED NOSE GEAR DISAGREEMENT WITH GEAR HANDLE POS (DOWN) AND THERE WAS NOT GREEN DOWNLOCK FOR NOSE GEAR FROM EITHER A OR B SYS. L AND R MAIN GEAR FUNCTIONED NORMALLY. ABNORMAL GEAR EXTENSION PROCS WERE UNSUCCESSFUL (BOTH ELECTRIC OVERRIDE AND FREEFALL). FINALLY, BY REPEATING NORMAL GEAR DOWN METHOD AGAIN PRODUCED SATISFACTORY DOWNLOCK. NO EMER DECLARED NOR ASSISTANCE REQUESTED. LNDG WAS NORMAL.

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.