ERA23LA329

NTSB accident investigation · Eipper Formance Mxii · Holy Hill, SC · August 9, 2023

Accident · Serious injuriesClass 4 · LimitedFinal report
Date
August 9, 2023, 19:30 local (23:30 UTC)
Place
Holy Hill, SC
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N1624ZEipper Formance Mxii
Defining event
Initial climb: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20230809012229A
Case key
192837

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 exceedance of the critical angle of attack during the initial climb, which resulted in an aerodynamic stall at low altitude and a collision with a hangar. Contributing to the accident was the pilot’s lack of experience in the accident make and model airplane.

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.

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 pilot reported that the accident flight was his first flight in this make and model airplane, and he planned to complete a few high-speed taxi runs before deciding to takeoff. During the first high-speed taxi attempt, the pilot lifted the nose wheel up, and after riding on the rear wheels he increased engine power to “slightly lift off”; however, the airplane quickly climbed to 30 or 40 feet above ground level within a few seconds. Subsequently, the pilot reduced power to land, but the airplane immediately entered an aerodynamic stall and rolled to the left. The airplane continued to descend and impacted a hangar which resulted in substantial damage to the fuselage and wings. The pilot reported that there were no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. He further added that he was unfamiliar with the airplane.

Aircraft

Registration
N1624Z
Reported as
Eipper Formance Mxii (NO SERIES)
Category
Airplane, amateur-built
Serial number
1764
Built
2007
Engine
Rotax 582, 50 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Airport
5J5 · Holly Hill, runway 4-22, 3,900 × 75 ft, grass/turf
Equipment
None

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
45
Injuries
Serious
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Without waivers/limitations
Last flight review
July 21, 2022
Seat
Left
Restraint
4-point
Flight hours
243 total · 0 in this make and model · 180 as pilot in command · 32 in the last 90 days · 9 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
200° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 73 °F
Altimeter
29.94 inHg
Observed at
OGB, 25 nm away
METAR
KOGB 092353Z AUTO 20004KT 10SM CLR 28/23 A2994 RMK AO2 SLP134 T02780228 10322 20278 53006

Docket · 3

The files NTSB released with the investigation on December 13, 2023, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.0 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.

Other investigations on N1624Z · 1

Matched to the same aircraft by N-number and date.