Nose gear stuck on an air carrier mdt aircraft resulting in a nose gear up landing.

Attributes
ACN	231316
Time
Date	199301
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mht
State Reference	NH
Altitude	agl bound lower : 0 agl bound upper : 1000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tower : mht tower : pit
Operator	common carrier : air carrier
Make Model Name	Small Transport
Flight Phase	landing other other other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : atp
Experience	flight time last 90 days : 160 flight time total : 3700 flight time type : 2500
ASRS Report	231316
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 220 flight time total : 4600 flight time type : 220
ASRS Report	231185
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency none taken : anomaly accepted other
Consequence	other Other
Supplementary
Primary Problem	Aircraft
Situations
Publication	Unspecified

Narrative:

After departing bos and completing after takeoff checklist crew found that the gear in transit light remained flashing. The 3 green indicator lights did extinguish. Crew performed checklist for situation. Cycled gear down and the 3 gear lights illuminated but the gear in transit light remained flashing. The poh does not include a checklist for a situation gear handle down and the gear in transit light on. Crew decided to cycle gear again. When crew selected gear up, the 3 green indicator lights extinguished and gear in transit light remained flashing. When gear was selected down the main gear indicators lighted but not the nose wheel. Gear was cycled 4 more times. Situation remained the same, main wheel indicators lighted but not nose wheel and gear in transit light remained flashing. While situation was developing, crew was in radio contact with dispatch and maintenance. Crew decided to use emergency gear extension system. Maintenance confirmed this use. The emergency extension system did not extend nose gear. Our director of operations advised crew to divert to mht (approximately 25 mi away from bos). Aircraft was landed in mht with nose wheel retracted. No passengers or crew was hurt. Crew followed all checklists which were available. When gear handle was selected down and gear in transit light flashing, crew had no checklist to follow. Crew worked with maintenance department to determine course of action and continued to cycle gear. Maintenance confirmed that with the gear in transit light flashing that we had gear unsafe situation. The poh does not supply enough information concerning the situation experienced. A checklist for gear handle down, gear in transit light flashing would have avoided any questions about what procedure to take.

Original NASA ASRS Text

Title: NOSE GEAR STUCK ON AN ACR MDT ACFT RESULTING IN A NOSE GEAR UP LNDG.

Narrative: AFTER DEPARTING BOS AND COMPLETING AFTER TKOF CHKLIST CREW FOUND THAT THE GEAR IN TRANSIT LIGHT REMAINED FLASHING. THE 3 GREEN INDICATOR LIGHTS DID EXTINGUISH. CREW PERFORMED CHKLIST FOR SIT. CYCLED GEAR DOWN AND THE 3 GEAR LIGHTS ILLUMINATED BUT THE GEAR IN TRANSIT LIGHT REMAINED FLASHING. THE POH DOES NOT INCLUDE A CHKLIST FOR A SIT GEAR HANDLE DOWN AND THE GEAR IN TRANSIT LIGHT ON. CREW DECIDED TO CYCLE GEAR AGAIN. WHEN CREW SELECTED GEAR UP, THE 3 GREEN INDICATOR LIGHTS EXTINGUISHED AND GEAR IN TRANSIT LIGHT REMAINED FLASHING. WHEN GEAR WAS SELECTED DOWN THE MAIN GEAR INDICATORS LIGHTED BUT NOT THE NOSE WHEEL. GEAR WAS CYCLED 4 MORE TIMES. SIT REMAINED THE SAME, MAIN WHEEL INDICATORS LIGHTED BUT NOT NOSE WHEEL AND GEAR IN TRANSIT LIGHT REMAINED FLASHING. WHILE SIT WAS DEVELOPING, CREW WAS IN RADIO CONTACT WITH DISPATCH AND MAINT. CREW DECIDED TO USE EMER GEAR EXTENSION SYS. MAINT CONFIRMED THIS USE. THE EMER EXTENSION SYS DID NOT EXTEND NOSE GEAR. OUR DIRECTOR OF OPS ADVISED CREW TO DIVERT TO MHT (APPROX 25 MI AWAY FROM BOS). ACFT WAS LANDED IN MHT WITH NOSE WHEEL RETRACTED. NO PAXS OR CREW WAS HURT. CREW FOLLOWED ALL CHKLISTS WHICH WERE AVAILABLE. WHEN GEAR HANDLE WAS SELECTED DOWN AND GEAR IN TRANSIT LIGHT FLASHING, CREW HAD NO CHKLIST TO FOLLOW. CREW WORKED WITH MAINT DEPT TO DETERMINE COURSE OF ACTION AND CONTINUED TO CYCLE GEAR. MAINT CONFIRMED THAT WITH THE GEAR IN TRANSIT LIGHT FLASHING THAT WE HAD GEAR UNSAFE SIT. THE POH DOES NOT SUPPLY ENOUGH INFO CONCERNING THE SIT EXPERIENCED. A CHKLIST FOR GEAR HANDLE DOWN, GEAR IN TRANSIT LIGHT FLASHING WOULD HAVE AVOIDED ANY QUESTIONS ABOUT WHAT PROC TO TAKE.

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.