ERA21LA242

NTSB accident investigation · Let L-23 Super Blanik · Pittsfield, PA · May 31, 2021

Accident · No injuriesClass 4 · LimitedFinal report
Date
May 31, 2021, 14:00 local (18:00 UTC)
Place
Pittsfield, PA · KP15 Airport
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N912BLet L-23 Super Blanik
Defining event
Landing-flare/touchdown: Hard landing
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
20210531013249A
Case key
103234

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 student pilot’s improper landing flare, which resulted in a hard landing and loss of directional control.

Findings · 2

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · Student/instructed pilotLet L-23 SUPER BLANIK: 10 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: landing flareAircraft › Aircraft oper/perf/capability · Not attained/maintainedLet L-23 SUPER BLANIK: 2 casesAll aircraft: 1,285 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 had completed a training flight to pattern altitude just prior to the accident flight with his flight instructor. After that flight, the glider was towed to 3,000 feet above ground level and released from the tow rope so the student pilot could get some solo practice. The total duration of the solo flight was approximately 1.5 hours. Nothing unusual occurred with the flight until the student pilot turned on to the final leg of the traffic pattern for landing. The glider descended quicker than usual as the student pilot had the airbrakes (wing spoilers) extended. The pilot also stated that developed a leg cramp in his right leg on final approach. The pilot subsequently landed the glider “hard” and after touchdown, the pilot lost directional control. The glider then veered off the left side of the runway, struck a runway light and a drainage culvert with the right wing leading edge and lower airbrake, and then struck a taxiway light with the left wing. The glider’s right wing and fuselage were substantially damaged.

Aircraft

Registration
N912B
Reported as
Let L-23 Super Blanik
Category
Glider
Serial number
917912
Built
1992
Airframe hours
1,274.3
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Brokenstraw Soaring Club Inc
Registered owner
Brokenstraw Soaring Club Inc
Airworthiness certificate
Standard, Utility
Last inspection
Annual · May 10, 2021
Departed
P15 · Pittsfield, PA
Airport
P15 · Brokenstraw, runway 27, 3,650 × 100 ft, grass/turf
Equipment
Unknown

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
67
Injuries
None
Certificate
Student
Seat
Front
Restraint
4-point
Flight hours
21 total · 21 in this make and model · 3 as pilot in command · 3 in the last 90 days · 3 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 10 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
63 °F, dew point 37 °F
Altimeter
30.30 inHg
Observed at
KJHW, 20 nm away
METAR
KJHW 311756Z AUTO 27010KT 160V050 10SM CLR 17/03 A3030 RMK AO2 SLP266 T01720033 10172 20083 58013

Docket · 5

The files NTSB released with the investigation on September 14, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 15.9 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.