Monday, February 03, 2020

Ground Collision: Panzl S-330, N540ML and de Havilland Canada DHC-6 Twin Otter 100, N166DH; accident occurred October 11, 2019 at Polk County Airport (4A4), Cedartown, Georgia

Panzl S-330, N540ML
View of damage to the left wing. 
Federal Aviation Administration


N540ML Aviation Accident Factual Report - National Transportation Safety Board: https://app.ntsb.gov/pdf

N540ML Investigation Docket - National Transportation Safety Board: https://dms.ntsb.gov/pubdms

https://registry.faa.gov/N540ML

Location: Cedartown, GA
Accident Number: GAA20CA021A
Date & Time: 10/11/2019, 1904 EDT
Registration: N540ML
Aircraft: WINGTIP TO WINGTIP LLC PANZL S-330
Aircraft Damage: Substantial
Defining Event: Ground collision
Injuries: 1 None
Flight Conducted Under: Part 91: General Aviation - Personal

The pilot in the landing airplane reported that, he had turned on the airport runway pilot-controlled lighting about 5 miles prior to arriving at the airport, and transmitted 2-mile final radio call, over the airport's CTAF. He landed the airplane and made "S" turns on runway 28 because, "it is not possible to see the opposite threshold" when established on the runway. When the pilot began a right turn to exit the runway at the mid-field taxiway, an airplane that had initiated a takeoff roll from the opposite end of the runway collided with the landing airplane. The airport's runway does not have a parallel taxiway and it is standard practice to back taxi to the departure end.

During a conversation with the IIC, the pilot in the departing airplane reported that he was performing a skydiving operation. He transmitted his intentions to taxi to the mid-field intersection and to depart runway 10. He did not activate the pilot-controlled runway lighting but recalled that he had noticed that the pilot activated lighting had been turned on, and he taxied to the hold short line and did not see any airplanes. He back taxied to the approach end of runway 10 and maneuvered his airplane to takeoff from runway 10. During the takeoff roll the left wing of his airplane struck the landing airplane.

The departing airplane sustained substantial damage to the left wing spar.

Neither pilot recalled hearing radio transmissions on the airport's CTAF.

Both pilots reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. 

Pilot Information

Certificate: Commercial
Age: 65, Male
Airplane Rating(s): Multi-engine Land; Single-engine Land
Seat Occupied: Single
Other Aircraft Rating(s): Glider
Restraint Used:
Instrument Rating(s): Airplane
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: BasicMed With Waivers/Limitations
Last FAA Medical Exam: 12/09/2019
Occupational Pilot: Yes
Last Flight Review or Equivalent: 03/29/2019
Flight Time:  (Estimated) 2465 hours (Total, all aircraft), 665 hours (Total, this make and model), 2421 hours (Pilot In Command, all aircraft), 34 hours (Last 90 days, all aircraft), 17 hours (Last 30 days, all aircraft), 3 hours (Last 24 hours, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: WINGTIP TO WINGTIP LLC
Registration: N540ML
Model/Series: PANZL S-330
Aircraft Category: Airplane
Year of Manufacture: 2008
Amateur Built: No
Airworthiness Certificate: Experimental
Serial Number: 008
Landing Gear Type: Tailwheel
Seats: 1
Date/Type of Last Inspection: 04/09/2019, Condition
Certified Max Gross Wt.: 1550 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 752.3 Hours at time of accident
Engine Manufacturer: Lycoming
ELT: Not installed
Engine Model/Series: IO-540  G1D5
Registered Owner: On file
Rated Power: 330 hp
Operator: On file
Operating Certificate(s) Held: None

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Night
Observation Facility, Elevation: KPUJ, 1290 ft msl
Distance from Accident Site: 12 Nautical Miles
Observation Time: 0255 UTC
Direction from Accident Site: 122°
Lowest Cloud Condition: Clear
Visibility:  10 Miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: Calm /
Turbulence Type Forecast/Actual:
Wind Direction:
Turbulence Severity Forecast/Actual:
Altimeter Setting: 30.14 inches Hg
Temperature/Dew Point: 17°C / 14°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Tazewell, TN (3A2)
Type of Flight Plan Filed: None
Destination: Cedartown, GA (4A4)
Type of Clearance: None
Departure Time: 1905 EDT
Type of Airspace: Class G

Airport Information

Airport: Polk County Airport- Cornelius (4A4)
Runway Surface Type: Asphalt
Airport Elevation: 973 ft
Runway Surface Condition: Dry
Runway Used: N/A
IFR Approach: None
Runway Length/Width:
VFR Approach/Landing: Full Stop

Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: N/A
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 1 None
Latitude, Longitude: 34.018611, -85.146389 (est)

N166DH Aviation Accident Factual Report - National Transportation Safety Board: https://app.ntsb.gov/pdf

N166DH Investigation Docket - National Transportation Safety Board: https://dms.ntsb.gov/pubdms

https://registry.faa.gov/N166DH

Location: Cedartown, GA
Accident Number: GAA20CA021B
Date & Time: 10/11/2019, 1904 EDT
Registration: N166DH
Aircraft: De Havilland DHC 6 TWIN OTTER
Aircraft Damage: Unknown
Defining Event: Ground collision
Injuries: 11 None
Flight Conducted Under: Part 91: General Aviation - Skydiving 

The pilot in the landing airplane reported that, he had turned on the airport runway pilot-controlled lighting about 5 miles prior to arriving at the airport, and transmitted 2-mile final radio call, over the airport's CTAF. He landed the airplane and made "S" turns on runway 28 because, "it is not possible to see the opposite threshold" when established on the runway. When the pilot began a right turn to exit the runway at the mid-field taxiway, an airplane that had initiated a takeoff roll from the opposite end of the runway collided with the landing airplane. The airport's runway does not have a parallel taxiway and it is standard practice to back taxi to the departure end.

During a conversation with the IIC, the pilot in the departing airplane reported that he was performing a skydiving operation. He transmitted his intentions to taxi to the mid-field intersection and to depart runway 10. He did not activate the pilot-controlled runway lighting but recalled that he had noticed that the pilot activated lighting had been turned on, and he taxied to the hold short line and did not see any airplanes. He back taxied to the approach end of runway 10 and maneuvered his airplane to takeoff from runway 10. During the takeoff roll the left wing of his airplane struck the landing airplane.

The departing airplane sustained substantial damage to the left wing spar.

Neither pilot recalled hearing radio transmissions on the airport's CTAF.

Both pilots reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. 

Pilot Information

Certificate: Commercial
Age: 73, Male
Airplane Rating(s): Multi-engine Land; Single-engine Land
Seat Occupied: Unknown
Other Aircraft Rating(s): None
Restraint Used:
Instrument Rating(s): Airplane
Second Pilot Present: No
Instructor Rating(s): Airplane Single-engine
Toxicology Performed: No
Medical Certification: Class 2 None
Last FAA Medical Exam: 08/01/2019
Occupational Pilot: Yes
Last Flight Review or Equivalent:
Flight Time: 

Aircraft and Owner/Operator Information

Aircraft Make: De Havilland
Registration: N166DH
Model/Series: DHC 6 TWIN OTTER 100
Aircraft Category: Airplane
Year of Manufacture: 1967
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 66
Landing Gear Type: Tricycle
Seats: 1
Date/Type of Last Inspection:
Certified Max Gross Wt.: 12500 lbs
Time Since Last Inspection:
Engines: 2 Reciprocating
Airframe Total Time:
Engine Manufacturer: LYCOMING
ELT:  
Engine Model/Series: IO-540-G1D5
Registered Owner: Sdp Llc
Rated Power:
Operator: Sdp Llc
Operating Certificate(s) Held: None 

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Night
Observation Facility, Elevation: KPUJ, 1290 ft msl
Distance from Accident Site: 12 Nautical Miles
Observation Time: 0255 UTC
Direction from Accident Site: 122°
Lowest Cloud Condition: Clear
Visibility:  10 Miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: Calm /
Turbulence Type Forecast/Actual:
Wind Direction:
Turbulence Severity Forecast/Actual:
Altimeter Setting: 30.14 inches Hg
Temperature/Dew Point: 17°C / 14°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Cedartown, GA (4A4)
Type of Flight Plan Filed: None
Destination: Cedartown, GA (4A4)
Type of Clearance: None
Departure Time: 1904 EDT
Type of Airspace: Class G

Airport Information

Airport: Polk County Airport- Cornelius (4A4)
Runway Surface Type: Asphalt
Airport Elevation: 973 ft
Runway Surface Condition: Dry
Runway Used: N/A
IFR Approach: None
Runway Length/Width:
VFR Approach/Landing: Full Stop

Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Unknown
Passenger Injuries: 10 None
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 11 None
Latitude, Longitude: 34.018611, -85.146389 (est)

4 comments:

  1. How is it possible for the Twin Otter's wing to impact the wing of the taxiing Panzl? The strut or the landing gear possibly, but not the wing. What am I missing?

    ReplyDelete
  2. My thoughts exactly ... I'm thinking that what actually happened had to be a little more creative that what they described.

    Beautiful woodwork ... Just not the way I like to see it.

    ReplyDelete
  3. In the hand written report, the Panzl pilot stated the Twin Otter's landing gear hit his wing. It wasn't a wing to wing impact.

    ReplyDelete
  4. Memo for the record and 6120 in the docket says the splintered plane did not have any lights installed and the DH landing gear made the contact. Runway slope supposedly hides far end.

    Dusk landing after flight from Tennessee without any nav lights or rotating beacon or strobe on unicom field with no taxiway. Lucky to have no injuries.

    Photo without wing damage:
    https://www.jetphotos.com/photo/7959136

    ReplyDelete