What happened
On October 7, 2017, an Aero-Boero AB-115, registration PP-GEM, operated by Aeroclube de Resende, was performing a navigation mission from Resende (SDRS) to São José dos Campos (SBSJ). After landing on runway 15 at Professor Urbano Ernesto Stumpf Airport, the pilot proceeded via taxiway "E" and onto the runway 15 stopway, heading toward the aeroclub apron.
While taxiing, the pilot encountered the Runway Arresting Gear (RAG) cable, which had been extended across the stopway to assist in braking aircraft during test flights. Upon identifying the cable and realizing the aircraft had bypassed the intended access to the aeroclube apron, the pilot applied the brakes abruptly. This sudden deceleration caused the aircraft to pitch forward, resulting in the propeller blades and spinner striking the ground.
The investigation
The investigation established that the pilot was fully qualified, holding a valid commercial license and medical certificate, and possessed the necessary experience for the flight. The aircraft was also in a compliant state, with a valid airworthiness certificate, updated technical logs, and operating within weight and balance limits. Meteorological conditions were favorable for the operation.
Investigators examined the airport infrastructure and noted that when the RAG system is installed, it obstructs standard taxi routes, requiring pilots to use alternative paths. The investigation found that the access point to the aeroclube apron lacked adequate signage to guide pilots, which likely contributed to the pilot missing the turn.
Findings
- Abrupt application of brakes to avoid the RAG cable led to the aircraft's nose-over.
- Inadequate airport signage at the taxiway access point contributed to the pilot's failure to identify the correct path.
- The pilot's judgment during the emergency braking maneuver was a contributing factor to the structural impact.