# Accident 20110813019901A: Knab Douglas J RV-8, Conroe, TX, August 13, 2011

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: August 13, 2011, 11:30 local time
- Place: Conroe, TX
- Airport: Lone Star Executive
- Damage: Substantial damage
- Collision: Midair collision
- Phase of flight: Other, Specify
- Operating rules: General operating rules (Part 91)
- Location: 30.9025° N, 95.5817° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=30.9025&lon=-95.5817&mi=10
- Aircraft: N189DK, registered now (https://openairdocs.org/aircraft/N189DK) (OpenAirDocs)
- Registry model: Knab Douglas J RV-8 (registry code 05628J1, https://openairdocs.org/model/knab-douglas-j-rv-8) (OpenAirDocs)
- Registry engine: Lycoming IO-360-M1B (registry code 41871, https://openairdocs.org/engine/lycoming-io-360-m1b) (OpenAirDocs)
- Reported make and model: KNAB DOUGLAS J RV-8
- Reported engine: LYCOMING IO-360-M1B+
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 1
- Pilot certificates: Private pilot
- Pilot flight hours: 1,917 total, 178 in this make and model, 25 in the last 90 days
- NTSB investigation: [NTSB CEN11LA573](https://openairdocs.org/ntsb/CEN11LA573) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20110813019901A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

ON AUG 13, 2011 15 MILES NORTHWEST OF LONE STAR EXECUTIVE AIRPORT (CXO), N16DD WAS PART OF A SEVEN AIRCRAFT FLIGHT CONDUCTING FORMATION PRACTICE AT APPROXIMATELY 1500 FT MSL.  DURING A SHALLOW LEFT BANKING TURN, AND AFTER RECEIVING THE COMMAND TO MOVE FROM A DIAMOND TO A TRAIL FORMATION, N16DD, COLLIDED WITH N189DK FROM UNDERNEATH. N16DD BURST INTO FLAMES AND IMPACTED THE GROUND IN A WOODED AREA. N189DK MADE AN EMERGENCY LANDING APPROXIMATELY ¼ MILE TO THE SOUTHEASTN189DK SHOWED EVIDENCE THAT THE PROPELLER STUCK A HEAVY/ HARD METAL OBJECT. THERE WERE IMPACT DENTS AND SCARS WITH PAINT TRANSFER IN SEVERAL PLACES ON THE AIRCRAFT TO INCLUDE THE LEFT LOWER COWLING, LEFT AND RIGHT MAIN LANDING GEAR, LEADING EDGE AND LOWER PART  OF RIGHT WING AMD TRAILING EDGE OF RIGHT ELEVATOR. THERE WAS A LIGHT LAYER OF SOOT ON THE TOP OF BOTH WINGS, BOTH SIDES OF THE FUSELAGE, AND THE EMPENNAGE. THE AIRCRAFT MADE A SUCCESSFUL EMERGENCY LANDING APPROXIMATELY ¼ MILE SOUTH EAST OF THE IMPACT SITE OF N16DD. THE PILOT SUSTAINED MINOR INJURIES. THESE INCLUDED SECOND DEGREE BURNS THE HIS LEFT HAND, FOREARM AND TORSO. THIS MAY HAVE BEEN FROM THE FIREBALL CAUSED DURING THE MID AIR COLLISION. N16DD SHOWED EVIDENCE OF A POSSIBLE PRE AND POST FLIGHT FIRE. THE ENGINE WAS STRUCK ON THE TOP NEAR THE FRONT OF THE NUMBER ONE CYLINDER. THE MAJOR ENGINE DAMAGE INCLUDED STRIKING THE COOLING FINS OF THE CYLINDER, DETACHING THE VALVE PUSHROD AND SEVERING THE FUEL LINES. OTHER MID AIR IMPACT EVIDENCE COULD HAVE BEEN DESTROYED DURING THE POST CRASH FIRE. THE PILOT SUSTAINED FATAL INJURIES. IT IS UNDETERMINED IF THESE WERE FROM THE MID AIR COLLISION OR THE CRASH IMPACT.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB CEN11LA573](https://openairdocs.org/ntsb/CEN11LA573), Aug 13, 2011: Knab Douglas J RV-8 (N189DK), Conroe, TX, destroyed, 1 fatal. Probable cause: The failure of the pilot of the RV-6 airplane to maintain clearance from the RV-8 airplane while practicing formation flight.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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