<< >> NASA ASRS Report 341176, July 1996

A civilian hercules aircraft flew in an unairworthy condition in revenue service. Aircraft damage right landing gear mechanism. Aircraft equipment problem right landing gear would not retract.

Attributes
ACN	341176
Time
Date	199607
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : gal
State Reference	AK
Altitude	agl bound lower : 500 agl bound upper : 500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Super Hercules GL207
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff other other
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 : 13500 flight time type : 13000
ASRS Report	341176
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : less severe non adherence : far other anomaly other
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

After takeoff, the right main gear did not retract as fast as the nose and left gear. The gear were returned to 'down' and went down and indicated safely down. A landing was made to inspect the situation. The inspection revealed that the gear was, in fact, safely down. 3 more flts were conducted with the landing gear in the down position. The situation was written up when the maintenance base was reached. Maintenance inspection revealed some damage to the retraction mechanism. There is concern that 'revenue' flts were flown after a malfunction was discovered. The hercules is designed so that when the gear are down, they will not retract inadvertently. Pilots should beware of accepting too much responsibility. They should utilize all avenues of communication to receive assistance in decision making.

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Original NASA ASRS Text

Title: A CIVILIAN HERCULES ACFT FLEW IN AN UNAIRWORTHY CONDITION IN REVENUE SVC. ACFT DAMAGE R LNDG GEAR MECHANISM. ACFT EQUIP PROB R LNDG GEAR WOULD NOT RETRACT.

Narrative: AFTER TKOF, THE R MAIN GEAR DID NOT RETRACT AS FAST AS THE NOSE AND L GEAR. THE GEAR WERE RETURNED TO 'DOWN' AND WENT DOWN AND INDICATED SAFELY DOWN. A LNDG WAS MADE TO INSPECT THE SIT. THE INSPECTION REVEALED THAT THE GEAR WAS, IN FACT, SAFELY DOWN. 3 MORE FLTS WERE CONDUCTED WITH THE LNDG GEAR IN THE DOWN POS. THE SIT WAS WRITTEN UP WHEN THE MAINT BASE WAS REACHED. MAINT INSPECTION REVEALED SOME DAMAGE TO THE RETRACTION MECHANISM. THERE IS CONCERN THAT 'REVENUE' FLTS WERE FLOWN AFTER A MALFUNCTION WAS DISCOVERED. THE HERCULES IS DESIGNED SO THAT WHEN THE GEAR ARE DOWN, THEY WILL NOT RETRACT INADVERTENTLY. PLTS SHOULD BEWARE OF ACCEPTING TOO MUCH RESPONSIBILITY. THEY SHOULD UTILIZE ALL AVENUES OF COM TO RECEIVE ASSISTANCE IN DECISION MAKING.

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.