Tuesday, May 14, 2019

Runway Excursion: Cessna 421B Golden Eagle, N813CA; accident occurred September 21, 2015 at Platteville Municipal Airport (KPVB), Grant County, Wisconsin

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

Additional Participating Entities:

Federal Aviation Administration / Flight Standards District Office; Milwaukee, Wisconsin
Continental Motors; Mobile, Alabama 
Textron Aviation; Wichita, Kansas 

Aviation Accident Factual Report - National Transportation Safety Board: https://app.ntsb.gov/pdf

Investigation Docket - National Transportation Safety Board: https://dms.ntsb.gov/pubdms 

Location: Platteville, WI
Accident Number: CEN15LA418
Date & Time: 09/21/2015, 1040 CDT
Registration: N813CA
Aircraft: CESSNA 421B
Aircraft Damage: Substantial
Defining Event: Runway excursion
Injuries: 2 Minor
Flight Conducted Under: Part 91: General Aviation - Business 

On September 21, 2015, about 1040 central daylight time, a Cessna 421B airplane, N813CA, sustained substantial damage after a loss of engine power and runway excursion at Platteville Municipal Airport (PBV), Platteville, Wisconsin. The commercial-rated pilot and passenger were not injured. The airplane was registered to Blue Hansa LLC and operated by a private individual under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed at the time of the accident and an instrument flight rules flight plan was filed. The flight was originating at the time of the accident.

The pilot reported he completed a preflight inspection of the airplane per the checklist and checked the weather. He taxied to the end of runway 15 and completed the pre-takeoff checklist, which included an engine run-up for each engine. There were no anomalies noted during the pre-flight or pre-takeoff checklists. He taxied onto the runway and advanced both throttles full forward. At 85 knots, just before the runway 7/25 crossing, he started rotation and noticed the right engine manifold pressure decrease and felt a power reduction. He aborted the takeoff; he pulled back both throttles and applied the brakes "hard." The airplane continued on the runway for about 1,000 ft then off of the runway into the grass and a soybean field where it came to rest.

The responding Federal Aviation Administration (FAA) inspector documented the witness marks left from the accident airplane on the runway and grass surfaces. There were airplane tire skid marks on the last 1,000 ft of runway pavement and tire marks in the grass for 290 ft off the end of the runway where the terrain slopes downward. The tire marks were not present for about 90 ft consistent with the airplane becoming airborne until the airplane impacted the ground again and the gear collapsed. The witness marks in the grass continued for another 90 ft where the airplane came to rest in a soybean field.

Runway 15/33 at PVB is 3,999 ft in length. The intersection of runway 7/25 is about 3,000 ft from the beginning of runway 15; the remaining runway distance from the intersection to the departure end of runway 15 is about 1,000 ft. According to Cessna 421B operating manual, the distance needed during an accelerated stop with a decision speed of 85 knots is about 2,400 ft.

The right engine was sent to Continental Motors, Inc (CMI) in Mobile, Alabama for examination and an engine test run, which were completed on January 4 and 5, 2015. The right engine was received intact with no signs of significant impact damage. The cylinders were borescoped; the cylinders, piston faces, and valve heads displayed normal operating and combustion signatures. The magneto-to-engine timing was checked, the exact timing was not able to be determined because it was about 5ยบ past the specified timing scale visible from the engine timing plug.

The right engine was mounted on a test stand for functional testing. The engine started normally, on the first attempt with no signs of hesitation in RPM. The propeller was out of track because the propeller flange was bent. Shims were placed between the propeller flange and hub to bring the propeller back in track. The engine was restarted, and the engine RPM was advanced in steps for warm-up in preparation for full power operation; the engine run time was limited due to the damage to the propeller flange. Throughout the test phase, the engine accelerated normally without any hesitation or interruption in power and demonstrated the ability to produce rated horsepower. 

Pilot Information

Certificate: Commercial; Private
Age: 66, Male
Airplane Rating(s): Multi-engine Land; Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used: Unknown
Instrument Rating(s): Airplane
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 2 With Waivers/Limitations
Last FAA Medical Exam: 11/26/2013
Occupational Pilot: No
Last Flight Review or Equivalent: 09/27/2013
Flight Time:  1478 hours (Total, all aircraft), 194 hours (Total, this make and model), 1478 hours (Pilot In Command, all aircraft), 27 hours (Last 90 days, all aircraft), 4 hours (Last 30 days, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: CESSNA
Registration: N813CA
Model/Series: 421B B
Aircraft Category: Airplane
Year of Manufacture:
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 421B0894
Landing Gear Type: Tricycle
Seats: 7
Date/Type of Last Inspection: 08/01/2015, Annual
Certified Max Gross Wt.: 7449 lbs
Time Since Last Inspection:
Engines: 2 Reciprocating
Airframe Total Time: 3844.7 Hours at time of accident
Engine Manufacturer: Continental
ELT: C126 installed, activated, did not aid in locating accident
Engine Model/Series: GTSIO-520 H1B
Registered Owner: BLUE HANSA LLC
Rated Power: 375 hp
Operator: On file
Operating Certificate(s) Held: None

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: KPVB, 1024 ft msl
Distance from Accident Site: 0 Nautical Miles
Observation Time: 1455 UTC
Direction from Accident Site: 212°
Lowest Cloud Condition: Clear
Visibility:  10 Miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: 8 knots /
Turbulence Type Forecast/Actual:
Wind Direction: 170°
Turbulence Severity Forecast/Actual: /
Altimeter Setting: 30.13 inches Hg
Temperature/Dew Point: 18°C / 11°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Platteville, WI (PVB)
Type of Flight Plan Filed: IFR
Destination: DAYTON, OH (DAY)
Type of Clearance: IFR
Departure Time: 1000 CDT
Type of Airspace: 

Airport Information

Runway Surface Type: Asphalt
Airport Elevation: 1024 ft
Runway Surface Condition: Dry
Runway Used: 15
IFR Approach: None
Runway Length/Width: 3999 ft / 75 ft
VFR Approach/Landing: None

Wreckage and Impact Information

Crew Injuries: 1 Minor
Aircraft Damage: Substantial
Passenger Injuries: 1 Minor
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 2 Minor
Latitude, Longitude: 42.689444, -90.444444 (est)

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