CEN11LA348

NTSB accident investigation · Piper J3C · Cypress, TX · May 21, 2011

Accident · Minor injuriesLimited investigationFinal report
Date
May 21, 2011, 12:00 local (17:00 UTC)
Place
Cypress, TX
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N55754Piper J3C
Defining event
Initial climb: Loss of engine power (partial)
Weather
Visual (VMC) · Day
Status
Completed · report January 31, 2013
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA Houston FSDO
FAA report
20110521009459A
Case key
79168

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The loss of engine power due to carburetor ice.

Findings · 1

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Temp/humidity/pressure: conducive to carburetor icingEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomePiper J3C-65: 8 casesAll aircraft: 435 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

According to the pilot, the airplane stopped climbing during the initial climb, and began losing power. The pilot made an off-airport forced landing in a large yard behind a residence. During the landing roll, the airplane struck a fence and several trees, and came to rest upright. No preaccident mechanical malfunctions or failures were found that would have precluded normal operation. The pilot did not report using carburetor heat after engine start, during taxi, or during takeoff. According to a carburetor icing probability chart, an airplane operating in the ambient conditions at the time of the accident could expect a serious risk of carburetor icing while at glide power and a risk of icing at cruise power. Engine operations at low power settings during ground operations are similar to that of operations at glide power, making it likely the carburetor built up icing prior to takeoff. The airplane’s engine most likely experienced carburetor icing which resulted in the loss of engine power.

Factual narrative

On May 21, 2011, about 1200 central daylight time, a Piper J3C-65, N55754, was substantially damaged when it impacted terrain at Cypress, Texas. The airplane was owned by a private individual and operated by another private individual. The pilot and pilot rated passenger sustained minor injuries. Visual meteorological conditions prevailed and a flight plan had been not filed for the 14 Code of Federal Regulations Part 91 personal flight. At the time of the accident the airplane was departing Dry Creek Airport (TS07), Cypress, Texas, for a flight to Sport Flyers Airport (27XS), Brookshire, Texas. According to statements from both occupants the airplane stopped climbing during the initial climb, and began losing power and descending. The pilot made an off-airport forced landing in a large yard behind a residence. During the landing roll-out the airplane struck a fence and several trees, and came to rest upright. There was a significant fuel spill, but no postimpact fire. The impacts partially separated the left wing and damaged the engine, mounts, forward fuselage, empennage, and both wings. An examination of the airplane showed no preimpact anomalies with the engine. The pilot did not report using carburetor heat after engine start, during taxi, or during take-off. According to a carburetor icing probability chart, an airplane operating in the ambient conditions at the time of the accident could expect a serious risk of carburetor icing while at glide power and a risk of icing at cruise power.

Aircraft

Registration
N55754
Reported as
Piper J3C (65)
Category
Airplane
Serial number
10118
Airframe hours
4,323
Engine
Continental A-75-8, 75 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · October 16, 2010 · 77 hours before
Departed
TS07 · Cypress, TX
Destination
27XS · Brookshire, TX
Airport
TS07 · Dry Creek Airport

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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Flight instructor
Age
55
Injuries
Minor
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
March 22, 2010
Seat
Front
Flight hours
2,244 total · 57 in this make and model · 2,125 as pilot in command · 39 in the last 90 days · 1 in the last 30 days · 1 in the last 24 hours
Role
Other flight crew
Age
64
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Seat
Rear

Weather

Conditions
Visual (VMC) · Day
Wind
160° at 7 knots
Visibility
9 statute miles
Lowest ceiling
4,400 ft broken
Temperature
84 °F, dew point 70 °F
Altimeter
29.89 inHg
Observed at
KDWH, 8 nm away

Docket · 6

The files NTSB released with the investigation on July 8, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.6 MB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.