DC10 crew had main landing gear unsafe indications.

Attributes
ACN	426869
Time
Date	199901
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : gum
State Reference	GU
Altitude	msl bound lower : 2600 msl bound upper : 2600
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	DC-10 30
Flight Phase	other
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 240 flight time total : 18500
ASRS Report	426869
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency flight crew : overcame equipment problem other other
Consequence	Other

Narrative:

Air carrier flight #abc nrt-gum jan/xa/99. Upon gear extension gum, right main landing gear actuator broke (a loud bang). #3 hydraulic quantity was lost. We had 2 red unsafe indication lights on gear -- 1 at front panel, 1 at so panel. Right gear viewing port was inoperative due to hydraulic fluid. Emergency declared. Did a fly-by to have tower verify gear position. Told flight attendants this was an emergency and to prepare passenger for possible gear problem and evacuate/evacuation with emergency equipment standing by. We performed a safe and uneventful landing. We cleared the active runway (runway 6L) and had our air carrier tow us to our gate (pins installed). We had 32000 pounds of fuel when the gear problem occurred. We flew approximately 30 mins in traffic pattern (VFR) while performing checklists and trying to reach our air carrier maintenance on both HF and VHF radios. A satcom radio would have been useful, as we were unable to reach maintenance. Our goals were to make sure all emergency checklists were completed, to reach maintenance, and to prepare cabin for possible gear collapse, and to land with no less than 10000 pounds of fuel. My crew did an outstanding job! The landing was safe, uneventful and with no damage or injuries.

Original NASA ASRS Text

Title: DC10 CREW HAD MAIN LNDG GEAR UNSAFE INDICATIONS.

Narrative: ACR FLT #ABC NRT-GUM JAN/XA/99. UPON GEAR EXTENSION GUM, R MAIN LNDG GEAR ACTUATOR BROKE (A LOUD BANG). #3 HYD QUANTITY WAS LOST. WE HAD 2 RED UNSAFE INDICATION LIGHTS ON GEAR -- 1 AT FRONT PANEL, 1 AT SO PANEL. R GEAR VIEWING PORT WAS INOP DUE TO HYD FLUID. EMER DECLARED. DID A FLY-BY TO HAVE TWR VERIFY GEAR POS. TOLD FLT ATTENDANTS THIS WAS AN EMER AND TO PREPARE PAX FOR POSSIBLE GEAR PROB AND EVAC WITH EMER EQUIP STANDING BY. WE PERFORMED A SAFE AND UNEVENTFUL LNDG. WE CLRED THE ACTIVE RWY (RWY 6L) AND HAD OUR ACR TOW US TO OUR GATE (PINS INSTALLED). WE HAD 32000 LBS OF FUEL WHEN THE GEAR PROB OCCURRED. WE FLEW APPROX 30 MINS IN TFC PATTERN (VFR) WHILE PERFORMING CHKLISTS AND TRYING TO REACH OUR ACR MAINT ON BOTH HF AND VHF RADIOS. A SATCOM RADIO WOULD HAVE BEEN USEFUL, AS WE WERE UNABLE TO REACH MAINT. OUR GOALS WERE TO MAKE SURE ALL EMER CHKLISTS WERE COMPLETED, TO REACH MAINT, AND TO PREPARE CABIN FOR POSSIBLE GEAR COLLAPSE, AND TO LAND WITH NO LESS THAN 10000 LBS OF FUEL. MY CREW DID AN OUTSTANDING JOB! THE LNDG WAS SAFE, UNEVENTFUL AND WITH NO DAMAGE OR INJURIES.

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.