WPR12LA052

NTSB accident investigation · Beech 76 · San Carlos, CA · December 2, 2011

Accident · No injuriesLimited investigationFinal report
Date
December 2, 2011, 14:25 local (22:25 UTC)
Place
San Carlos, CA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N23852Beech 76
Defining event
Landing-landing roll: Landing gear collapse
Weather
Visual (VMC) · Day
Status
Completed · report February 27, 2013
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20111202028219A
Case key
82455

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 collapse of the right main landing gear during the turn off the runway due to the failure of the A-frame assembly.

Findings · 1

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 shortly after takeoff, the tower controller notified him that the right main landing gear did not appear to fully retract. The pilot did a low fly-by over the runway, and the tower controller reported that all three landing gear appeared to be fully extended. The pilot then departed the area to another airport. While on approach for landing, the pilot selected the gear down. The left and nose landing gear indication lights illuminated; however, the right did not. The pilot tested the light bulb and performed an emergency gear extension that was unsuccessful. During a low approach, tower personnel reported that the landing gear appeared to be in the down position. The pilot was subsequently cleared to land, and during the landing roll, everything appeared normal except the right gear light was still not on. The pilot reported that after touchdown he cautiously slowed the airplane to almost a complete stop before turning off the runway. During the turn, the right main landing gear collapsed. A postaccident visual examination of the gear revealed that the A-frame assembly failed in what appeared to be in overload at the top/forward attach point.

Factual narrative

On December 2, 2011, about 1425 Pacific standard time (PST), the right main landing gear of a Beech 76 Duchess, N23852, collapsed after landing at the San Carlos Airport, San Carlos, California. Bel-Air was operating the airplane under the provisions of 14 Code of Federal Regulations (CFR) Part 91. The commercial pilot with a certified flight instructor (CFI) certificate and the private pilot undergoing instruction (PUI) were not injured; the airplane sustained substantial damage to the right wing. The local instructional flight departed Livermore, California, about 1410. Visual meteorological conditions prevailed, and no flight plan had been filed. Shortly after takeoff, the pilot was notified by the tower controller that the right main landing gear did not appear to fully retract. The pilot then circled back around so that the controller could get a look at the gear. While on the downwind leg, the pilot cycled the gear to try and correct the discrepancy. During the low approach, the tower controller advised the pilot that all three landing gear appeared to be extended. The pilot then requested to depart to another airport. While on approach for landing, the pilot selected the gear down. The left and nose gear indication lights illuminated, however, the right did not. The pilot tested the light bulb and performed an emergency gear extension, which was unsuccessful. During a low approach, tower personnel reported that the landing gear appeared to be in the down position. The pilot was subsequently cleared to land, and during the landing roll everything appeared normal except for the right gear light was still not on. The pilot reported that he cautiously slowed the airplane to almost a complete stop before turning off the runway. During the turn, the right main landing gear collapsed. During the recovery, the airplane was lifted and the right main landing gear was extended and secured. An examination of the landing gear by the assigned Federal Aviation Administration inspector and maintenance personnel revealed that the A-frame assembly, PN-105-810023-68, failed in what appreared to be overload at the top/forward attach point.

Aircraft

Registration
N23852
Reported as
Beech 76
Category
Airplane
Serial number
ME-15
Airframe hours
9,102
Engines
Lycoming O&VO-360 SER, 180 horsepower, reciprocatingLycoming O&VO-360 SER, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Bel-Air International
Registered owner
Al-Abed Alex
Airworthiness certificate
Standard, Normal; Standard, Utility
Last inspection
100 hour · October 24, 2011 · 25 hours before
Departed
LVK · Livermore, CA
Destination
SQL · San Carlos, CA
Airport
SQL · San Carlos Airport, runway 30, 2,600 × 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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Flight instructor
Age
27
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
April 28, 2011
Seat
Right
Flight hours
1,130 total · 140 in this make and model · 1,040 as pilot in command · 152 in the last 90 days · 61 in the last 30 days · 6 in the last 24 hours
Role
Student pilot
Age
23
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Last flight review
June 8, 2011
Seat
Left
Flight hours
298 total · 44 in this make and model · 136 as pilot in command · 12 in the last 90 days · 2 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
310° at 3 knots
Visibility
30 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 25 °F
Altimeter
29.95 inHg
Observed at
KSQL

Docket · 4

The files NTSB released with the investigation on January 25, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 5.2 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.