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Military light transport has brakes lock on landing after cockpit indication that right main not locked. 4 tires blown.
| Attributes | |
| ACN | 230785 |
| Time | |
| Date | 199301 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : yyr |
| State Reference | FO |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : roc |
| Operator | other |
| Make Model Name | Light Transport |
| Navigation In Use | Other |
| Flight Phase | landing other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : military |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 110 flight time total : 5400 flight time type : 110 |
| ASRS Report | 230785 |
| Person 2 | |
| Affiliation | government : military |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : declared emergency none taken : anomaly accepted |
| Consequence | other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
While extending landing gear for visual pattern goose bay, canada, we received indications via indicator lights that our right main gear was not locked. 2 circuits were flown by the tower for visual cues. Tower reported that gear appeared to be down. Alternate means of extension were attempted but no change in indication occurred. Upon landing all appeared normal until nosewheel contacted runway. At this time abnormal deceleration was encountered and directional control was difficult. The drag chute was deployed and aircraft stopped on runway. Upon post-flight inspection we found all 4 main gear tires blown out due to locked brakes, although brakes were never applied after touchdown. Damage was limited to 4 tires only. 4 new tires and right main gear actuator were installed. Aircraft was returned to service. The cause of the locked brakes is under investigation.
Original NASA ASRS Text
Title: MIL LTT HAS BRAKES LOCK ON LNDG AFTER COCKPIT INDICATION THAT R MAIN NOT LOCKED. 4 TIRES BLOWN.
Narrative: WHILE EXTENDING LNDG GEAR FOR VISUAL PATTERN GOOSE BAY, CANADA, WE RECEIVED INDICATIONS VIA INDICATOR LIGHTS THAT OUR R MAIN GEAR WAS NOT LOCKED. 2 CIRCUITS WERE FLOWN BY THE TWR FOR VISUAL CUES. TWR RPTED THAT GEAR APPEARED TO BE DOWN. ALTERNATE MEANS OF EXTENSION WERE ATTEMPTED BUT NO CHANGE IN INDICATION OCCURRED. UPON LNDG ALL APPEARED NORMAL UNTIL NOSEWHEEL CONTACTED RWY. AT THIS TIME ABNORMAL DECELERATION WAS ENCOUNTERED AND DIRECTIONAL CTL WAS DIFFICULT. THE DRAG CHUTE WAS DEPLOYED AND ACFT STOPPED ON RWY. UPON POST-FLT INSPECTION WE FOUND ALL 4 MAIN GEAR TIRES BLOWN OUT DUE TO LOCKED BRAKES, ALTHOUGH BRAKES WERE NEVER APPLIED AFTER TOUCHDOWN. DAMAGE WAS LIMITED TO 4 TIRES ONLY. 4 NEW TIRES AND R MAIN GEAR ACTUATOR WERE INSTALLED. ACFT WAS RETURNED TO SVC. THE CAUSE OF THE LOCKED BRAKES IS UNDER INVESTIGATION.
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.