GAA17CA465

NTSB accident investigation · Czech Aircraft Works Spol Sro Sportcruiser · Salisbury, NC · August 4, 2017

Accident · No injuriesData collectionFinal report
Date
August 4, 2017, 08:00 local (12:00 UTC)
Place
Salisbury, NC
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N777NGCzech Aircraft Works Spol Sro Sportcruiser
Defining event
Landing-flare/touchdown: Hard landing
Weather
Visual (VMC) · Day
Status
Completed · report February 21, 2018
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
Case key
95741

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 physical interference of the student pilot’s headset control unit with the canopy, which prevented the canopy latches from seating properly and resulted in the canopy opening in flight and the subsequent hard landing.

Findings · 3

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.

Communications system: interphoneAircraft › Aircraft systems · Unintentional use/operationCzech Aircraft Works Spol Sro SPORTCRUISER: 1 caseAll aircraft: 4 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · Student/instructed pilotCzech Aircraft Works Spol Sro SPORTCRUISER: 8 casesAll aircraft: 9,295 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

The student pilot reported that he had departed with the intent to perform touch-and-go takeoffs and landings. After takeoff, he realized that the canopy was not latched. He struggled to maintain airplane control in the pattern, but he was able to land normally. The student pilot then checked the latch handle, and he believed that he had secured the canopy correctly. He took off and flew one pattern but just before landing, the canopy opened and obstructed the pilot's view of the runway. The airplane landed hard and bounced, and the pilot aborted the landing. The student pilot flew a third pattern and made an approach over the runway centerline, "slightly above stall airspeed." The airplane landed hard on the runway, and the right main landing gear (MLG) and the nose landing gear separated from the airplane. The airplane skidded to a stop on the runway. The airplane sustained substantial damage to the right MLG attachment points and the right-wing spar. The student pilot asserted that the canopy latch was down during the takeoffs but was not seated correctly. For the latch to seat correctly, "the canopy itself needed to be pushed up so that gravity seated the canopy." The airplane was equipped with a full-width clear canopy, hinged in the front and tipped forward for entry to the cockpit. The manually operated canopy was supposed to be closed by the pilot by reaching above their head and grabbing the handle identified by the manufacturer's illustrated parts catalogue as SF0730N. Per the photographs provided by Federal Aviation Administration (FAA) aviation safety inspectors, the handle was not installed on the canopy. The canopy security latches consisted of two metal claw-type latches that were mechanically moved forward to secure the canopy to the fuselage. The canopy latches were moved forward to the secure position when the pilot lowered the canopy "T" handle. The "T" handle was affixed to the baggage compartment front wall in the cockpit between the left and right seats just above the arm rest and just below the pilot headset audio input jacks. The student pilot's head set control unit was about 4 inches long by 1 inch in diameter. Photographs taken shortly after the accident and provided by FAA inspectors revealed that the control unit was lodged underneath the "T" handle. The student pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Factual narrative

The student pilot reported that he had departed with the intent to perform touch-and-go takeoffs and landings. After takeoff, he realized that the canopy was not latched. He struggled to maintain airplane control in the pattern, but he was able to land normally. The student pilot then checked the latch handle and he believed that he had secured the canopy correctly. He took off and flew one pattern but just prior to landing, the canopy opened and obstructed the pilot's view of the runway. The airplane landed hard and bounced, and the pilot aborted the landing. The student pilot flew a third pattern and made an approach over the runway centerline, "slightly above stall airspeed." The airplane landed hard on the runway and the right main landing gear and the nose landing gear separated from the airplane. The airplane skidded to a stop on the runway. The airplane sustained substantial damage to the right main landing gear attachment points and the right-wing spar. The student pilot asserted that the canopy latch was down during the takeoffs, but was not seated correctly. For the latch to seat correctly, "the canopy itself needed to be pushed up so that gravity seated the canopy." The airplane was equipped with a full-width clear canopy, hinged in the front, and tipped forward for entry to the cockpit. The manually operated canopy was closed by the pilot reaching above their head and grabbing the handle identified by the manufacturer's illustrated parts catalogue as SF0730N. Per the photographs provided by Federal Aviation Administration (FAA)Aviation Safety Inspectors, the handle was not installed on the canopy. The canopy security latches consisted of two metal, claw-type, latches that were mechanically moved forward to secure the canopy to the fuselage. The canopy latches are moved forward to the secure position when the pilot lowers the canopy "T" handle. The "T" handle is affixed to the baggage compartment front wall in the cockpit, between the left and right seats just above the arm rest and just below the pilot headset audio input jacks. The student pilot's head set control unit was about 4 inches long by 1 inch in diameter. Photographs taken shortly after the accident and provided by FAA Inspectors revealed that control unit was lodged underneath the "T" handle. The student pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Aircraft

Registration
N777NG
Reported as
Czech Aircraft Works Spol Sro Sportcruiser (A)
Category
Airplane
Serial number
07SC059
Built
2007
Airframe hours
2,593
Engine
Rotax ROTAX 912S (4, 100 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Nmg Aviation LLC
Registered owner
Nmg Aviation LLC
Airworthiness certificate
Special, Special light-sport (Special)
Last inspection
Annual · June 1, 2017
Departed
KRUQ · Salisbury, NC
Destination
KRUQ · Salisbury, NC
Airport
KRUQ · Rowan County, runway 20, 5,500 × 100 ft
Equipment
Heads up display, Auto-pilot, Handheld GPS

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
Student pilot
Age
68
Injuries
None
Certificate
Student
Airplane ratings
Single-engine land
Medical
Sport pilot, Without waivers/limitations
Seat
Left
Restraint
3-point
Flight hours
46 total · 46 in this make and model · 7 as pilot in command · 11 in the last 90 days · 4 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
7 statute miles
Lowest ceiling
None
Temperature
66 °F, dew point 66 °F
Altimeter
30.13 inHg
Observed at
RUQ

Docket · 3

The files NTSB released with the investigation on January 26, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 5.1 MB in all.