Incident Overview
Description
The aircraft took off from Bras¡lia, Brazil on a flight to the Campo de Marte Airport, S?o Paulo, Brazil with one pilot and three passengers. During the flight the weather conditions, which initially were favorable, deteriorated. Upon arrival at the destination, the airport started to operate under VFR Special conditions. The pilot was cleared for an approach to runway 30. The landing took place in heavy rain and during the landing roll out, when applying the brakes, the pilot realized that it did not have effectiveness in the braking of the aircraft. He then used the emergency brake. The aircraft left the runway on the right side and stopped after the left main landing gear broke. Contributing Factors (translated from Portuguese) 1 Human Factor 1.1 Medical Aspect Nothing to report. 1.2 Psychological Aspect 1.2.1 Individual Information Nothing to report. 1.2.2 Psychosocial Information Nothing to report. 1.2.3 Organizational Information Nothing to report. 1.3 Operational Aspect 1.3.1 Concerning the operation of the aircraft a) Adverse weather conditions – contributed The runway became flooded and impractical due to heavy rainfall that interfered with the operation of the aircraft and led to abnormal circumstances. b) Airport infrastructure – contributed There was no efficient drainage system at the aerodrome, allowing the entire runway to be contaminated at the time of the accident, which contributed to hydroplaning and consequent low braking effectiveness of the aircraft. There was no standardized procedure for the evaluation of the runway in relation to the presence of water (wet or contaminated) and its transfer to the air traffic control units to inform the pilots, which contributed to the pilot not knowing in advance that the runway was contaminated. c) Instruction – contributed The aircraft training program did not include specific training for landing on short runways and for varying runway conditions such as wet and contaminated. d) Pilot judgement – contributed The pilot judged that he could use the brakes of the aircraft differently than specified in the manuals, which contributed to the locking of the wheels during the run after the landing. 1.3.2 Concerning ATS Did not contribute. 2 Material Factor 2.1 Concerning the aircraft Did not contribute. 2.2 Concerning ATS technology equipment and systems Did not contribute.
Primary Cause
Adverse weather conditions, particularly heavy rainfall and the resulting flooded runway, significantly impaired the aircraft’s braking capabilities.Adverse weather conditions, particularly heavy rainfall and the resulting flooded runway, significantly impaired the aircraft’s braking capabilities.Share on:
