Saturday, October 10, 2020

System/Component Malfunction/Failure (Non-Power): Hawker 800XP, N86MN: accident occurred October 07, 2019 at Southwest Florida International Airport (KRSW), Fort Myers, Florida


The National Transportation Safety Board did not travel to the scene of this accident.

Additional Participating Entity: 
Federal Aviation Administration / Flight Standards District Office; Tampa, Florida

Aviation Accident Factual Report - National Transportation Safety Board:

Investigation Docket - National Transportation Safety Board:

Location: Fort Myers, FL
Accident Number: ERA20LA008
Date & Time: 10/07/2019, 2305 EDT
Registration: N86MN
Aircraft: Raytheon HAWKER
Aircraft Damage: Substantial
Defining Event: Sys/Comp malf/fail (non-power)
Injuries: 4 None
Flight Conducted Under: Part 135: Air Taxi & Commuter - Non-scheduled 

On October 7, 2019, at 2305 eastern daylight time, a Raytheon Corporate Jets Inc. Hawker 800XP airplane, N86MN, landed with the nose landing gear retracted on runway 6 at Southwest Florida International Airport (RSW), Fort Myers, Florida. The two airline-transport pilots and 2 passengers were not injured. The airplane was operated by Delta Private Jets, as a Title 14 Code of Federal Regulations Part 135 on-demand charter flight. The flight originated from Naples Municipal Airport (APF), Naples, Florida at 1953 and was destined for Kerrville Municipal Airport (ERV), Kerrville, Texas.

The pilot-in-command reported that after a normal takeoff roll and rotation from APF, during the initial climb and landing gear retraction, he observed a red warning light that the nose landing gear (NLG) remained in transit and was not fully retracted. He reported that a vibration and a "thud" were felt from the NLG section; at this time the main landing gear indicated that they were retracted. He further reported that the flight crew attempted to extend the landing gear via the checklist but were unable to get the NLG to indicate that it was extended or retracted. Subsequently, the flight crew diverted to RSW due to the availability of a 12,000 ft dry runway; during the landing, the NLG failed to extend, the airplane skidded to a stop on the runway, and the flight crew and passengers performed an emergency evacuation via the main cabin door.

Review of photographs that were taken immediately after the landing, showed the main landing gear extended, but the NLG remained retracted in its wheel well. The fuselage sustained substantial damage.

Review of photographs provided by the Federal Aviation Administration inspector and operator revealed that the NLG actuator push rod linkage (drag stay) was disconnected from its attach point, and the nut, washer, and split pin assembly were missing. Figure 1 provides a reference to a drawing in the airplane's illustrated parts catalog and a photograph of the actuator as found postaccident. The area circled in red is where the nut, washer, and split pin were normally located. The actuator remained attached at its opposing, as noted as area "A" in Figure 1.

Figure 1: Raytheon Hawker 800/ 850XP illustrated parts catalog and postaccident photograph

Deformation was observed in the area where the nut, washer, and split pin assembly were expected to be installed. When the NLG was manually extended by hand by operator maintenance personnel, it locked into place.

Maintenance records provided by StandardAero, which was the heavy check maintenance facility contracted by Delta Private Jets (DPJ) to perform inspections, revealed that the NLG and main landing gear were overhauled in January 2019, as part of a larger inspection for DPJ's Approved Aircraft Inspection Program (AAIP). StandardAero maintenance task job cards indicated that the nose landing gear unit was removed, overhauled, and reinstalled by a mechanic and was checked and signed off by a quality assurance inspector. The endorsement for the NLG task stated the work was performed in accordance with the airplane maintenance manual instructions #32-20-12.

The StandardAero quality assurance inspector who signed off the work reported it is standard practice to utilize the approved airplane maintenance manuals during inspections and quality assurance inspectors check the work performed by mechanics. There were no discrepancies noted by the quality assurance inspector with regard to the work performed with the NLG.

Review of DPJ maintenance records found that there were no other repairs or inspections of the NLG leg or its actuator drag stay since StandardAero completed the work in January 2019. At the time of the accident, the landing gear had accumulated 124 cycles since the overhaul.

The airplane's maintenance manual, nose landing gear and nose leg assembly installation instructions (#32-20-12) contained 19 steps and step 6 stated in part: (6) Attach the drag stay to the leg forging with the pin, make sure the flat on the head of the pin engages the flat on the drag stay, install the washer and nut. Tighten the nut and lock with a new split pin.

Pilot Information

Certificate: Airline Transport
Age:57, Male 
Airplane Rating(s): Multi-engine Land; Single-engine Land
Seat Occupied:Left 
Other Aircraft Rating(s): None
Restraint Used:
Instrument Rating(s): Airplane
Second Pilot Present: Yes
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 1 Without Waivers/Limitations
Last FAA Medical Exam: 07/26/2019
Occupational Pilot:Yes 
Last Flight Review or Equivalent: 08/03/2019
Flight Time:  3905 hours (Total, all aircraft), 450 hours (Total, this make and model), 3270 hours (Pilot In Command, all aircraft), 68 hours (Last 90 days, all aircraft), 18 hours (Last 30 days, all aircraft), 5.5 hours (Last 24 hours, all aircraft) 

Co-Pilot Information

Certificate: Airline Transport
Age: 37, Male
Airplane Rating(s): Multi-engine Land; Single-engine Land
Seat Occupied:Right 
Other Aircraft Rating(s): None
Restraint Used:
Instrument Rating(s): Airplane
Second Pilot Present: Yes
Instructor Rating(s):None 
Toxicology Performed: No
Medical Certification: Class 1 Without Waivers/Limitations
Last FAA Medical Exam: 02/20/2019
Occupational Pilot: Yes
Last Flight Review or Equivalent: 09/26/2019
Flight Time:  5366 hours (Total, all aircraft), 24 hours (Total, this make and model), 2058 hours (Pilot In Command, all aircraft), 83 hours (Last 90 days, all aircraft), 24 hours (Last 30 days, all aircraft), 5 hours (Last 24 hours, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: Raytheon
Registration: N86MN
Model/Series: HAWKER 800XP
Aircraft Category: Airplane
Year of Manufacture: 1997
Amateur Built:No 
Airworthiness Certificate: Transport
Serial Number: 258330
Landing Gear Type: Retractable - Tricycle
Date/Type of Last Inspection: 10/01/2019, Condition
Certified Max Gross Wt.: 28120 lbs
Time Since Last Inspection:
Engines: 2 Turbo Fan
Airframe Total Time: 10080.6 Hours at time of accident
Engine Manufacturer:Garrett-Honeywell 
ELT: C126 installed, not activated
Engine Model/Series: TFE731-5BR-1H
Registered Owner: Uytsaifly800xp LLC.
Rated Power:4750 lbs 
Operator:Delta Private Jets 
Operating Certificate(s) Held: On-demand Air Taxi (135)
Operator Does Business As:
Operator Designator Code: 031D

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Night
Observation Facility, Elevation: RSW, 9 ft msl
Distance from Accident Site: 0 Nautical Miles
Observation Time: 1941 EDT
Direction from Accident Site: 0°
Lowest Cloud Condition: Scattered / 3000 ft agl
Visibility:   10 Miles
Lowest Ceiling: Broken / 12000 ft agl
Visibility (RVR):
Wind Speed/Gusts: 6 knots /
Turbulence Type Forecast/Actual: None / None
Wind Direction: 150°
Turbulence Severity Forecast/Actual: N/A / N/A
Altimeter Setting: 29.8 inches Hg
Temperature/Dew Point: 24°C / 11°C
Precipitation and Obscuration: No Obscuration
Departure Point: Naples, FL (APF)
Type of Flight Plan Filed: IFR
Destination: Kerrville, TX (ERV)
Type of Clearance: IFR
Departure Time: 1953 EDT
Type of Airspace: Class C

Airport Information

Airport: Southwest Florida Intl (RSW)
Runway Surface Type: Asphalt
Airport Elevation: 29 ft
Runway Surface Condition: Dry
Runway Used: 06
IFR Approach:Visual 
Runway Length/Width: 12000 ft / 150 ft
VFR Approach/Landing: None

Wreckage and Impact Information

Crew Injuries: 2 None
Aircraft Damage: Substantial
Passenger Injuries: 2 None
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 4 None
Latitude, Longitude:  26.533611, -81.759167 (est)

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