WPR14LA051

NTSB accident investigation · Piper PA 31P · Calexico, CA · October 12, 2013

Accident · No injuriesLimited investigationFinal report
Date
October 12, 2013, 15:00 local (22:00 UTC)
Place
Calexico, CA
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N14TGPiper PA 31P
Defining event
Landing-landing roll: Landing gear collapse
Weather
Visual (VMC) · Day
Status
Completed · report March 10, 2015
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
FAA-FSDO
Case key
88426

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 failure to maintain the proper pitch attitude during the landing, which resulted in the nose landing gear contacting the surface hard and then separating from the 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.

Performance/control parameters: pitch controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper PA-31P: 1 caseAll aircraft: 526 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotPiper PA-31P: 3 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 pilot reported that he set up for a straight-in approach to the runway, that the approach was normal, and that he completed the prelanding checklist. He was targeting 90 knots indicated airspeed (KIAS) for touchdown, but the airplane was "slightly fast" as it was approaching the runway, so he pulled the power back to idle and initiated the landing flare. The airplane was unresponsive when he pulled up the nose. Although the airplane settled down on the main landing gear first, the nosewheel then contacted the surface and abruptly sheared off, the nose landing gear assembly separated from the airplane, and the airplane then nosed down and slid about 1,000 feet down the runway before coming to rest. Postaccident examination of the nose landing gear strut assembly found that the housing was ruptured and that the strut had separated. Further examination of the assembly found no evidence of preimpact mechanical malfunctions or failures that would have precluded normal operation. The pilot reported that there were known problems controlling the airplane's nose attitude when the airplane was in the landing configuration between 90 KIAS and the recommended landing speed of about 80 KIAS. He stated that, although both these speeds are above the stall speed, they are too slow for the airplane to respond to pilot elevator control inputs. It is likely that the pilot did not maintain the appropriate pitch attitude for landing and that the nose landing gear contacted the surface hard, which broke the gear strut.

Factual narrative

On October 12, 2013, at 1500 Pacific daylight time, a Piper PA-31P, N14TG, experienced a nose gear separation during the landing roll at the Calexico International Airport, Calexico, California. The commercial pilot and two passengers were not injured. The forward fuselage was substantially damaged. The airplane was registered to and operated by Flying Bull Aviation under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed and no flight plan was filed. The flight originated from El Cajon, California, at 1425. The pilot reported that he set-up for a straight in approach to runway 8. The approach was normal and the prelanding checklist was completed. The pilot stated that he was targeting 90 KIAS for touchdown, but the airspeed was slightly fast approaching the runway so he pulled the power back to idle and flared. The airplane was unresponsive when he pulled up the nose as the airplane settled on the main landing gear. The nosewheel abruptly sheared off upon surface contact and the airplane nosed down and slid about 1,000 feet down the runway before coming to rest. The pilot further reported that there are known problems controlling the nose attitude in the landing configuration between 90 KIAS and the recommended landing speed around 80 KIAS. Both these speeds are above the stalling speed, but too slow to respond to pilot action regarding elevator control. Post accident examination of the nose gear strut found that the housing was ruptured and the strut was broken. Further examination revealed no evidence of preimpact mechanical malfunction or failure that would have precluded normal operation.

Aircraft

Registration
N14TG
Reported as
Piper PA 31P (UNDESIGNAT)
Category
Airplane
Serial number
31P-7400190
Built
1974
Airframe hours
3,301
Engines
Lycoming TIGO-541SER, 425 horsepower, reciprocatingLycoming TIGO-541SER, 425 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Flying Bull Aviation LLC
Registered owner
Flying Bull Aviation LLC
Airworthiness certificate
Standard, Normal
Last inspection
Annual · October 23, 2012 · 150 hours before
Departed
SEE · El Cajon, CA
Destination
CXL · Calexico, CA
Airport
CXL · Calexico Intl, runway 08, 4,683 × 75 ft, asphalt

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
52
Injuries
None
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
August 25, 2013
Seat
Left
Restraint
3-point
Flight hours
689 total · 35 in this make and model · 625 as pilot in command · 1 in the last 90 days · 1 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
90° at 2 knots
Visibility
6 statute miles
Lowest ceiling
None
Temperature
72 °F
Altimeter
29.84 inHg
Observed at
CXL

Docket · 2

The files NTSB released with the investigation on January 21, 2015, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.4 MB in all.