- Date
- March 7, 2004, 17:15 local (Mar 8, 2004, 00:15 UTC)
- Place
- Berthoud, CO
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N7138KShook Rans S-12
- Weather
- Visual (VMC) · Day
- Status
- Completed · report September 29, 2004
- Report
- Approved by Office Director
- Parties
- FAA FSDO
- FAA report
- 20040307003239A
- Case key
- 58872
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
the pilot's improper flare and his inadequate compensation for wind. The wind gust was a contributing factor.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
According to the pilot, he had entered a left downwind traffic pattern for the east/west runway, intending to land to the east. He "checked the wind sock and it was just fluttering with a very slight, if at all, crosswind... from the north." During the landing flare, he encountered a gust of wind from the north and the airplane stalled approximately 10 feet above the ground. The airplane bounced once and during the second impact with the ground, all three landing gear collapsed, substantially damaging the airplane. According to the FNL METAR (aviation routine weather report) taken at 1715, winds were reported as 150 degrees at 3 knots.
Factual narrative
On March 7, 2004, at approximately 1715 mountain standard time, a Shook Rans S-12, N7138K, was substantially damaged when the landing gear collapsed following collision with terrain at the Lazy W, a private airstrip near Berthoud, Colorado. The private pilot, the sole occupant on board, was not injured. Visual meteorological conditions prevailed. No flight plan had been filed for the local flight being conducted under the provisions of Title 14 CFR Part 91. The flight departed at approximately 1610.
According to the pilot, he was practicing landings at both the Lazy W airstrip and the Ft. Collins-Loveland Airport (FNL). (Lazy W is approximately 5 nautical miles southwest of FNL.) The pilot reported that he entered a left downwind traffic pattern for the east/west runway at Lazy W, intending to land to the east. He "checked the wind sock and it was just fluttering with a very slight, if at all, crosswind... from the north." During the landing flare, he encountered a gust of wind from the north and the airplane stalled approximately 10 feet above the ground. The airplane bounced once and during the second impact with the ground, all three landing gear collapsed, wrinkling the fuselage.
According to the FNL METAR (aviation routine weather report) taken at 1715, winds were reported as 150 degrees at 3 knots.
Aircraft
- Registration
- N7138K
- Reported as
- Shook Rans S-12
- Category
- Airplane, amateur-built
- Serial number
- 1094523
- Airframe hours
- 181.9
- Engine
- Rotax 618, 75 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Special, Experimental (Special)
- Last inspection
- Annual · September 12, 2003 · 34.6 hours before
- Departed
- Berthoud, CO
- Destination
- Berthoud, CO
- Airport
- PVT · Lazy W (Private strip), runway 090, 2,600 × 60 ft, grass/turf
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 47
- Injuries
- None
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, Valid Medical--no waivers/lim.
- Last flight review
- October 9, 2003
- Seat
- Left
- Flight hours
- 130 total · 32 in this make and model · 130 as pilot in command · 17 in the last 90 days · 6 in the last 30 days · 2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 150° at 3 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 59 °F, dew point 23 °F
- Altimeter
- 30.37 inHg
- Observed at
- FNL, 10 nm away
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.
Other investigations on N7138K · 1
Matched to the same aircraft by N-number and date.