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3rd of September 2021, Runway Overrun, Blog #615

A 2002 Raytheon 390 Premier I Business Jet was operating a charter flight from Indianapolis International Airport (Indiana, USA) to Naples Airport (Florida, USA). Onboard, one pilot and three passengers.

The aircraft in its final position (source; © Unknown) The aircraft took off around 10.20 local time and an uneventful flight followed and set course according to its IFR plan. The approach to runway 23 at Naples Airport was flown in good weather conditions, the weather around the time of arrival was recorded as;

  • Wind 150º / 5 knots

  • Clouds Scattered / 10.000ft AGL

  • Temperature 25ºC

  • Dewpoint 23ºC

Runway 23 at Naples is a 6600 ft long, 150 ft wide asphalt runway, which was dry when the aircraft was on the approach. At approximately 12.44 local time the aircraft touched down with about 4500 feet of runway remaining. The wheel brakes were applied and the aircraft started to decelerate when suddenly (as reported by the pilot) the brakes faded Although the pilot felt the brake pedals felt normal the brakes appeared to be "grabbing" before loosening in a continuous cycle. However, this was not enough to stop the aircraft on the runway. It overran the runway into the grass where the pilot steered the airplane off its landing track to avoid a collision with a blast fence.

Left-wing as seen after recovery (source; © Unknown) None of the occupants sustained an injury, however, damage to the aircraft was substantial, and major damage was observed on the;

  • Forward Pressure Bulkhead (crushed)

  • Cockpit Window frames (Cracked)

  • Nose Landing Gear (torn from its mountings)

  • Right Hand Main Landing Gear (partly torn from the mountings)

  • Wings (both structurally damaged)

The National Transportation Safety Board (NTSB) launched a (remote) investigation and did not travel to the accident site, The aircraft was inspected by a Federal Aviation Administrator whose findings were taken into account in the NTSB report. As the aircraft was not equipped with a Flight Data Recorder ADS-B (Automatic Dependent Surveillance-Broadcast) data was used to analyse the landing. The aircraft's landing weight of 10.000 lbs gave the aircraft a Reference Approach Speed (Vref) of 110 knots and a required 3000 feet (dry runway) and 3750 feet (wet runway) runway to come to a stop. (The pilot reported the runway as damp, with no standing water).

The nose landing gear bay, missing the nose landing gear and the landing gear bay doors

(source; © Unknown)

The following components were removed from the aircraft and sent to the manufacturer for testing;

  • Anti Skid Box

  • Brake valve

  • Anti Skid valve

  • Wheel speed transducers (both)

All these components passed their tests, there were no abnormalities observed.

As there were no obvious causes for the accident the National Transportation Safety Board determined that the probable cause(s) of this accident was;

"The pilot was unable to stop the airplane during the landing for reasons which could not be determined, resulting in a runway excursion."

Left-wing as seen after recovery (source; © Unknown)

The NTSB report which served as a source for this blog can be accessed by clicking on the .pdf file below;

03Sep21 Raytheon Runway Overrun
Download PDF • 745KB

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