Combs Dale B RV-4 N506DC
11 October 2011 · Madera, California, United States · No injuries
Summary
On 11 October 2011 at about 18:15 local time, a Combs Dale B RV-4 registered N506DC was involved in an accident near Madera, California, United States. 2 people were on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 18:15
- Classification
- Accident
- Location
- Madera, California, United States
- Nearest airport
- Fresno (E79)
- Coordinates
- 36.9900, -119.9600
- Aircraft
- Combs Dale B RV-4
- Registration
- N506DC
- Category
- Airplane
- Engines
- 1
- Operator
- Not recorded
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Personal
- Phase of flight
- Not recorded
- Route
- Fresno → Fresno
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- WPR12CA005
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 2 | 0 | 0 | 0 | 2 |
Probable cause
The third airplane pilot’s failure to maintain visual contact with the second airplane during the formation flight.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
The two accident airplanes were part of a three-airplane formation flight comprised of an RV-8 airplane in the lead position, an RV-8 in the second position, and an RV-4 in the third position. The group performed a formation flight briefing prior to flight. Three uneventful formation maneuvers were performed after departure; for the fourth maneuver, the lead pilot made a radio call commanding the group to begin a climbing left turn. All members of the group responded in the affirmative, and the lead pilot pitched his airplane up and began the turn. After a 2-second interval, the second RV-8 pilot began the maneuver, following the first airplane. The RV-4 pilot then began the maneuver and momentarily lost visual contact with the second RV-8. He then made visual contact with the lead airplane but misidentified it as the second RV-8. He then realized he was in error, but, just as he was about to perform evasive maneuvers, his airplane struck the second RV-8. The RV-4 sustained substantial damage to the aft fuselage, and the left wing tip and aileron partially separated from the airplane after making contact with the propeller of the RV-8. The pilot reported that the airplane began a 4,000-foot-per-minute spiraling descent and did not respond to aileron control inputs. He regained control of the airplane utilizing rudder, elevator, and throttle control, and subsequently performed a forced landing into a field. The RV-8 sustained substantial damage to the outboard section of the right wing leading edge and returned to the departure airport uneventfully. Both pilots reported no preimpact mechanical malfunctions or failures with the airframe or engine that would have precluded normal operation.
Quoted verbatim from the NTSB record.
Aircraft involved
| Aircraft | Registration | Operator | Damage |
|---|---|---|---|
| Combs Dale B RV-4 | N506DC | - | Substantial |
| Freitag Ernst VANS RV-8 | N427EF | - | Substantial |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 28 Nov 2011 | Cessna 172K | Napa, California, United States | Stratus Aviation, LLC | No injuries | - |
| 26 Feb 2011 | Hiller UH-12E | Colusa, California, United States | - | No injuries | - |
| 8 Jun 2011 | Cessna 172P | Palo Alto, California, United States | - | No injuries | - |
| 27 Feb 2011 | Cessna A150M | Grass Valley, California, United States | - | No injuries | - |
| 14 Jun 2011 | Grumman G-164A | Buttonwillow, California, United States | Vince Dusters, Inc. | No injuries | - |
| 26 Feb 2011 | Cessna 140A | Newark, California, United States | Morris Kenneth E | No injuries | - |