Incident Overview
On Wednesday, February 1, 2006, at 15:15 local time, a Cessna 172-RG with registration EC-HTL was involved in an incident at Badajoz Airport. The aircraft, operated by American Flyers España, was conducting a dual-command training flight from Cuatro Vientos to Badajoz and back. The flight crew consisted of one pilot-in-command and two passengers, all of whom were unharmed following the event.
Operational Sequence
During the final approach to Badajoz, the crew observed that the landing gear unsafe light remained illuminated after lowering the gear. A low pass was conducted for visual verification by air traffic control, which confirmed that the nose leg had not extended. Despite performing emergency extension procedures and multiple attempts, the nose gear failed to deploy. The crew declared an emergency, activated airport rescue services, and executed a belly landing.
Damage and Investigation Findings
The aircraft sustained significant damage to the engine, propeller, and the lower front fuselage. No other property was damaged. Post-incident inspection revealed that a component of the nose gear extension mechanism had caught on a hinge of the right gear door. This interaction deformed the hinge and jammed the door within the wheel well, preventing the leg from extending.
Further analysis indicated that the gear doors were significantly deformed due to repeated impacts against the fuselage skin during normal retraction cycles, suggesting that clearances specified in the service manual were not maintained. Additionally, laboratory testing of the two springs governing door opening showed they were approximately 6 mm longer than nominal and exhibited an elastic constant of only 20% of the design specification. This suggests the installed springs did not match the aircraft's component catalog specifications, resulting in slower door opening and contributing to the mechanical failure.