Quad City CHALLENGER N327SH

Summary

On 9 November 2016 at about 14:13 local time, a Quad City CHALLENGER registered N327SH, operated by Juguetes LLC, was involved in an accident near Crescent City, Florida, United States. 2 people were on board and 2 died. The aircraft was destroyed. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

9 November 2016 at 14:13

Classification

Accident

Location

Crescent City, Florida, United States

Nearest airport

Skinners Wholesale Nursery (16FD)

Coordinates

29.4081, -81.5144

Aircraft

Quad City CHALLENGER

Registration

N327SH

Category

Airplane

Year built

2008

Engines

1

Operator

Juguetes LLC

Operating rule

Part 91: General Aviation

Purpose of flight

Instructional

Phase of flight

Not recorded

Route

Crescent City → Crescent City

Aircraft damage

Destroyed

Weather

VMC

Light

Day

NTSB number

ERA17FA038

2 people died.

An abrupt pitch-up maneuver following a descent, which resulted in the in-flight separation of the right wing due to the overload failure of both the forward and aft right wing attachment brackets.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

The student pilot and flight instructor were conducting an instructional flight in an experimental amateur-built airplane about 3/4 mile east of the departure airport in light winds with no adverse weather nearby. The investigation could not determine which of the pilots was flying the airplane at the time of the accident. One witness reported hearing the engine noise decrease before seeing the airplane descend and then abruptly pitch up and hearing the engine noise increase. He then heard a loud sound and saw a wing separate from the fuselage. Subsequently, the airplane entered an uncontrolled descent and impacted trees and terrain. Another witness reported seeing the airplane flying overhead and hearing the engine running. He also saw a parachute trailing behind the airplane while it was descending. Examination of the wreckage revealed that both the forward and aft right wing "Rony" attachment brackets had failed. The brackets were separated from the root tube and the root tube was fractured on all four sides at the aft wing attachment bracket mounting holes. All the attachment brackets and root tube fracture surfaces were consistent with overload failure and showed no evidence of preexisting damage, cracks, or corrosion. Examination of the engine revealed no evidence of any preimpact mechanical failures or malfunctions that would have precluded normal operation. Although the ballistic recovery airframe parachute system was found deployed, the airplane impacted tress before the parachute could inflate. The airplane had been involved in a hard landing about 1 week before the accident. Two days before the accident, the student, who had previously been an airplane mechanic in the U.S. Navy, replaced a steel cable between the two landing gear legs, which had been broken during the hard landing. However, no evidence was found indicating that the hard landing or the repairs contributed to the failure of the right wing attachment brackets and subsequent wing separation. Although the toxicology testing of specimens from the flight instructor detected hydrocodone in the liver, the investigation could not determine whether the flight instructor's use of hydrocodone before the flight contributed to the accident. Although ethanol was detected in the student's muscle, it was not detected in the liver, and no n-propanol was detected in the liver, which is consistent with postmortem production of ethanol. Given the witness's statement and the wreckage evidence, it is likely the airplane was pitched up abruptly following a descent, which resulted in the in-flight separation of the right wing and the subsequent uncontrolled descent.

Quoted verbatim from the NTSB record.