CEN21LA066

NTSB accident investigation · Cessna 172 · Lawrence, KS · November 20, 2020

Accident · No injuriesClass 3 · LimitedFinal report
Date
November 20, 2020, 14:50 local (20:50 UTC)
Place
Lawrence, KS
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N99HVCessna 172
Defining event
Landing-flare/touchdown: Hard landing
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Central Region
Parties
FAA Flight Standards
FAA report
20201120018579A
Case key
102336

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 student pilot’s improper landing flare/touchdown which resulted in a hard landing.

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 pilotCessna 172S: 206 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: landing flareAircraft › Aircraft oper/perf/capability · Incorrect use/operationCessna 172S: 99 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 planned on a solo flight and reported that he didn't notice anything unusual during the pre-fight inspection. Before takeoff, he manipulated the control yoke through its full range of motion and did not notice any abnormalities. The student pilot reported that during the first takeoff, the nose pitched up and airplane climbed much faster than expected which he attributed to the weight difference from flying solo rather than with an instructor in the airplane. He stayed in the traffic pattern and stated he was centered on the runway and pulled back on the yoke for the flare. The yoke suddenly came back, and the nose pitched very high. The student pilot added that he didn't expect this sudden pitch change and prepared to add full throttle for a go-around when the airplane stalled and landed hard. After landing the student pilot moved the yoke through the full range forward and backward to check the functionality. He stated that he did not notice the same "pop" forward and backward like he did during the previous landing, so he taxied back for another takeoff. The student pilot again reported that during the second flight it was very difficult to control the pitch and airspeed and the yoke seemed to push either forward or backward over some type of "stuck" point, so he selected full flaps on final. After he initiated the landing flare, there was again a noticeable "snap" back of an inch or two of the control yoke. The main gear landed first, however; the nose wheel came down very fast. Examination of the airplane found damage to the airplane’s nose gear and substantial damage to the firewall and fuselage. There were no abnormities that would indicate the damage was present before the student’s hard landings and the damage to the structure and flight controls are likely due to the student’s two hard landings.

Factual narrative

On November 20, 2020, about 1450 central standard time, a Cessna 172S airplane, N99HV, was substantially damaged when it was involved in an accident near Lawrence, Kansas. The student pilot was not injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 instructional flight. According to the student pilot, he planned a solo flight. The instructor checked out the airplane from the flight school and passed it off to the student. The instructor indicated that although he would be with another student, he would still be available on the radio if the student needed anything. The student pilot reported that he didn't notice anything unusual during the pre-fight inspection and proceeded through the checklist for obtaining weather and runway information. The student pilot added that that he finished the engine runup and magneto checks and manipulated the control yoke through its full range of motion. The student pilot reported that during the first takeoff the nose pitched up and the airplane climbed much faster than expected, which he attributed to the weight difference from flying solo rather than with an instructor in the airplane. He added that it felt like he had to apply a lot of forward pressure on the yoke to keep the nose down, more than he was used to. He double checked the trim wheel, adding that it felt like it was out of trim, but the wheel was where he set it during the pre-flight. The student pilot stayed in the traffic pattern and on final he reduced the throttle and prepared to land. He stated he was centered on the runway and pulled back on the yoke for the flare. The yoke suddenly came back, and the nose pitched very high. The student pilot added that he didn't expect this sudden pitch change and prepared to add full throttle for a go-around when the airplane stalled and landed hard. After landing the student pilot moved the yoke through the full range forward and backward to check the functionality. He stated that he did not notice the same "pop" forward and backward like he did during the previous landing, so he taxied back for another takeoff. He stated that during the initial climb there was a noticeable change in the yoke pressure, and it was difficult to apply enough forward pressure to keep the nose down. He then turned from base to final and lined up for the landing. The student pilot again reported that it was very difficult to control the pitch and airspeed and the yoke seemed to push either forward or backward over some type of "stuck" point, so he selected full flaps on final. After he initiated the landing flare, there was again a noticeable "snap" back of an inch or two of the yoke. The main gear landed first, however; the nose wheel came down very fast. The student pilot reported that the yoke was as far back as it he could hold it, but the airplane didn't seem to respond to the control input. An initial inspection of the airplane noted damage to the airplane’s nose gear and substantialdamage to the firewall and fuselage. An additional examination of the airplane found damage to the forward fuselage structure. Elevator control movement was limited and there was impact damage to the airplane’s tunnel structure and control yoke guides, which jammed the elevator controls. Additional damage was found to the airplane’s landing gear which included the nose gear being tilted 15-degrees. There were no abnormities that would indicate the damage was present before the student’s hard landings.

Aircraft

Registration
N99HV
Reported as
Cessna 172 (S)
Category
Airplane
Serial number
172S10090
Airframe hours
7,843.9
Engine
Lycoming IO-360-L2A, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Aerohawk LLC
Registered owner
Aerohawk LLC
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
100 hour · October 21, 2020
Departed
LWC · Lawrence, KS
Airport
LWC · Lawrence Municipal

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
Injuries
None
Certificate
Student
Medical
Class 3, Without waivers/limitations
Seat
Left
Flight hours
19 total · 19 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
70° at 8 knots
Visibility
10 statute miles
Lowest ceiling
9,000 ft broken
Temperature
61 °F, dew point 39 °F
Altimeter
30.31 inHg
Observed at
KLWC

Docket · 4

The files NTSB released with the investigation on December 10, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.6 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.

Other investigations on N99HV · 3

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