Sunday, August 5, 2018

Pitts S-1C Special, N95R: Accident occurred May 29, 2016 at Cavern City Air Terminal (KCNM), Carlsbad, Eddy County, New Mexico

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

Additional Participating Entity:

Federal Aviation Administration / Flight Standards District Office; Lubbock, Texas

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


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

http://registry.faa.gov/N95R

Location: Carlsbad, NM
Accident Number: CEN16LA202
Date & Time: 05/29/2016, 1100 MDT
Registration: N95R
Aircraft: Harry Oas Pitts S1C
Aircraft Damage: Substantial
Defining Event: Loss of control on ground
Injuries: 1 None
Flight Conducted Under: Part 91: General Aviation - Personal 

On May 29, 2016, about 1100 mountain daylight time, an experimental, amateur-built Harry Oas Pitts S1C airplane, N95R, was substantially damaged when it nosed over following a runway excursion during landing on runway 14L (4,616 feet by 150 feet, asphalt) at the Cavern City Air Terminal (CNM), Carlsbad, New Mexico. The pilot was not injured. The airplane was registered to and operated by private individuals under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed for the flight, which was not operated on a flight plan. The flight originated from the Big Spring McMahon-Wrinkle Airport (BPG), Big Spring, Texas, at about 0935.

The pilot reported that the prevailing wind was from 160 degrees at 8 knots while on approach to runway 14L at CNM. The approach and touchdown were without incident; however, as the airplane slowed, a "slight" left turn developed. Right rudder and brake inputs were not effective. The left turn continued until the airplane departed the runway pavement. The right wing subsequently struck the ground and the airplane nosed over.

Examination of the runway environment revealed a skid mark beginning left of the centerline and gradually curving toward the left side of the pavement. The mark appeared to have been associated with the left main landing gear tire. There did not appear to be any skid marks associated with the right main landing gear tire.

A postaccident examination was conducted by a local mechanic on behalf of the NTSB. Flight control continuity was confirmed and each control surface exhibited freedom of movement. The brake system was intact and operational. No flat spots were observed on either tire. The mechanic noted that the brakes seemed to be "touchy," adding that a small amount of pedal travel was required to actuate the brakes. In addition, the firewall exhibited a scrape mark and depression consistent with contact from the right rudder/brake pedal linkage. However, movement of the right pedal did not appear to be restricted. 

Pilot Information

Certificate: Commercial
Age: 35, Male
Airplane Rating(s): Single-engine Land
Seat Occupied: Single
Other Aircraft Rating(s): None
Restraint Used: 5-point
Instrument Rating(s): Airplane
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 2 Without Waivers/Limitations
Last FAA Medical Exam: 09/30/2014
Occupational Pilot: No
Last Flight Review or Equivalent:
Flight Time:  740 hours (Total, all aircraft), 5 hours (Total, this make and model), 662 hours (Pilot In Command, all aircraft), 16 hours (Last 90 days, all aircraft), 12 hours (Last 30 days, all aircraft), 0 hours (Last 24 hours, all aircraft) 

Aircraft and Owner/Operator Information

Aircraft Make: Harry Oas
Registration: N95R
Model/Series: Pitts S1C
Aircraft Category: Airplane
Year of Manufacture: 1967
Amateur Built: Yes
Airworthiness Certificate: Experimental
Serial Number: OAS-1
Landing Gear Type: Tailwheel
Seats: 1
Date/Type of Last Inspection: 07/01/2015, Annual
Certified Max Gross Wt.: 1050 lbs
Time Since Last Inspection: 5 Hours
Engines: 1 Reciprocating
Airframe Total Time: 934.6 Hours at time of accident
Engine Manufacturer: Lycoming
ELT: Installed, not activated
Engine Model/Series: O-320
Registered Owner: Eric N Sorensen
Rated Power: 150 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: CNM, 3295 ft msl
Distance from Accident Site: 1 Nautical Miles
Observation Time: 1053 MDT
Direction from Accident Site: 360°
Lowest Cloud Condition: Clear
Visibility: 10 Miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: 10 knots /
Turbulence Type Forecast/Actual: /
Wind Direction: 160°
Turbulence Severity Forecast/Actual: /
Altimeter Setting: 30.11 inches Hg
Temperature/Dew Point: 27°C / 17°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Big Spring, TX (BPG)
Type of Flight Plan Filed: None
Destination: Carlsbad, NM (CNM)
Type of Clearance: None
Departure Time: 1035 CDT
Type of Airspace: Class E

Airport Information

Airport: Cavern City Air Terminal (CNM)
Runway Surface Type: Asphalt
Airport Elevation: 3295 ft
Runway Surface Condition: Dry
Runway Used: 14L
IFR Approach: None
Runway Length/Width: 4616 ft / 150 ft
VFR Approach/Landing: Full Stop; Traffic Pattern

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: 32.337500, 104.263333 (est)

NTSB Identification: CEN16LA202
14 CFR Part 91: General Aviation
Accident occurred Sunday, May 29, 2016 in Carlsbad, NM
Aircraft: Harry Oas Pitts S1C, registration: N95R
Injuries: 1 Uninjured.

This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

On May 29, 2016, about 1100 mountain daylight time, an experimental, amateur-built Harry Oas Pitts S1C airplane, N95R, was substantially damaged when it nosed over following a runway excursion during landing on runway 14L (4,616 feet by 150 feet, asphalt) at the Cavern City Air Terminal (CNM), Carlsbad, New Mexico. The pilot was not injured. The aircraft was registered to and operated by private individuals under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Day, visual meteorological conditions prevailed for the flight, which was not operated on a flight plan. The flight originated from the Big Spring McMahon-Wrinkle Airport (BPG), Big Spring, Texas, at about 0935.

The pilot reported that the landing approach and touchdown were without incident. As the airplane slowed, it entered a left turn. The pilot applied right rudder and brake inputs in an attempt to maintain directional control; however, those efforts were not effective. The left turn continued until the airplane departed the runway pavement and subsequently nosed over about 15 feet from the edge of the runway.

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