Alaska B738 at Santa Ana on Aug 20th 2023, gear punched through wing

Last Update: September 11, 2023 / 19:47:36 GMT/Zulu time

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Incident Facts

Date of incident
Aug 20, 2023

Classification
Accident

Airline
Alaska Airlines

Flight number
AS-1288

Departure
Seattle, United States

Destination
Santa Ana, United States

Aircraft Registration
N516AS

Aircraft Type
Boeing 737-800

ICAO Type Designator
B738

Airport
John Wayne Airport-Orange County Airport, Santa Ana

Airport ICAO Code
KSNA

An Alaska Airlines Boeing 737-800, registration N516AS performing flight AS-1288 from Seattle,WA to Santa Ana,CA (USA) with 106 passengers and 6 crew, landed on Santa Ana's runway 20R at 23:14L (06:14Z Aug 21st) but touched down hard causing the left main gear strut being punched through the left wing. The aircraft came to a stop on the runway and was disabled. There were no injuries, the aircraft sustained substantial damage however.

On Aug 25th 2023 The Aviation Herald learned, that other than initial reports suggested, the aircraft did not suffer a hard landing. The aft trunnion shear pin failed causing the damage to the upper wing panels.

On Sep 11th 2023 the NTSB released their preliminary report into the occurrence rated an accident stating that according to the crew approach and final approach were normal. The NTSB then wrote:

According to the captain, upon landing, the touchdown had a “firm jolt feeling” to it, and the aircraft was pulling reasonably hard to the left. The captain was able to overcome this with rudder pedal input and was able to keep the plane on the center line. He stated to the FO that it felt like the airplane had a flat tire on the left MLG. The FO completed the after-landing procedures, which included bringing the auxiliary power unit (APU) online. The captain slowed the aircraft to taxi speed and exited the runway onto taxiway E. After the aircraft made the turn onto the taxiway, the crew noticed that the aircraft was listing to the left.

The captain stopped the airplane on the taxiway and set the parking brake. He opened his window, looked outside, and noticed that the aircraft was resting on the left engine cowling, and it appeared to be still running normally. He immediately shut down the left engine. The captain also noted that the left landing gear position indicator light was not green anymore; it had gone completely dark, whereas the nose and right MLG position indicator lights were still green. After confirming the APU was running, he shut down the right engine. He made announcements to the passenger cabin and briefed the flight attendants. No injuries were reported.

The NTSB summarized the damage:

Postaccident examination of the airplane revealed that the MLG aft trunnion pin had fractured. The aft end of the left MLG had traveled up, puncturing the composite panels, and protruded out and above the wing’s surface. The MLG walking beam was also protruding above the surface of the wing. The forward section of the aft trunnion pin was located inside the trunnion and was held in place by a damaged but intact cross bolt. The aft section of the pin had separated and was located in the MLG beam spherical bearing.



Metars:
KSNA 210853Z AUTO 12010KT 10SM -RA BKN013 OVC021 19/17 A2991 RMK AO2 SLP126 6//// T01940172 51038 PNO $=
KSNA 210753Z AUTO 13011G21KT 10SM -RA BKN013 OVC023 20/17 A2988 RMK AO2 SLP117 T02000172 402500194 PNO $=
KSNA 210700Z AUTO 14017G23KT 10SM -RA BKN014 OVC020 19/17 A2984 RMK AO2 T01940172 PNO $=
KSNA 210653Z AUTO 14014G26KT 2SM -RA BKN014 OVC022 20/17 A2984 RMK AO2 PK WND 13026/0647 SLP103 T02000172 PNO $=
KSNA 210605Z AUTO 2SM +RA BR OVC011 21/19 A2981 RMK AO2 T02060189 PNO $=
KSNA 210553Z VRB03KT 2SM R20R/6000VP6000FT +RA BR BKN009 OVC013 21/19 A2979 RMK AO2 RAB02 SLP087 LAST 6//// T02060189 10250 20206 51082 PNO $=
KSNA 210501Z 17012G23KT 10SM FEW005 BKN018 OVC025 22/20 A2973 RMK AO2 PRESRR T02170200 PNO $=
KSNA 210453Z 17016G23KT 7SM FEW007 BKN014 OVC025 22/20 A2972 RMK AO2 RAE35 PRESRR SLP063 T02170200 PNO $=
KSNA 210444Z 20009KT 10SM FEW009 OVC015 22/21 A2971 RMK AO2 RAE35 T02220206 PNO $=
KSNA 210420Z 19012KT 2SM -RA SCT007 BKN012 OVC029 22/20 A2969 RMK AO2 SFC VIS 10 PRESRR T02170200 PNO $=
KSNA 210353Z 21013G20KT 2SM -RA BR OVC005 22/20 A2964 RMK AO2 PRESRR SLP036 T02170200 PNO $=
KSNA 210345Z 21012KT 2SM -RA BR BKN005 OVC010 21/20 A2963 RMK AO2 PRESRR T02110200 PNO $=
KSNA 210253Z 12015G23KT 6SM -RA BR OVC009 21/19 A2955 RMK AO2 SLP005 6//// T02110189 53037 PNO $=
KSNA 210231Z 12014G20KT 5SM -RA BR OVC009 22/20 A2953 RMK AO2 T02170200 PNO $=
KSNA 210219Z 13015G23KT 10SM -RA BKN011 OVC017 22/20 A2952 RMK AO2 T02220200 PNO $=
KSNA 210202Z 14014G24KT 10SM -RA BKN015 BKN055 23/20 A2951 RMK AO2 T02280200 PNO $=
KSNA 210153Z 14012G30KT 10SM -RA BKN013 BKN047 OVC060 23/21 A2950 RMK AO2 PK WND 15031/0125 SLP988 T02330206 PNO $=
KSNA 210126Z 15020G31KT 10SM -RA BKN013 OVC018 24/22 A2948 RMK AO2 PK WND 15031/0125 T02390217 PNO $=
KSNA 210110Z 13015G28KT 10SM -RA BKN018 BKN024 OVC055 24/22 A2948 RMK AO2 PK WND 14028/0107 T02440217 PNO $=
KSNA 210053Z 12011G18KT 8SM RA FEW012 OVC055 25/23 A2947 RMK AO2 SLP976 T02500228 PNO $=
Aircraft Registration Data
Registration mark
N516AS
Country of Registration
United States
Date of Registration
Ngdbpgbmmfkdd ei Subscribe to unlock
Manufacturer
BOEING
Aircraft Model / Type
737-890
Number of Seats
Gfe Subscribe to unlock
ICAO Aircraft Type
B738
Year of Manufacture
G mc Subscribe to unlock
Serial Number
Ppdfc Subscribe to unlock
Aircraft Address / Mode S Code (HEX)
Dkmbci Subscribe to unlock
Engine Count
L Subscribe to unlock
Engine Manufacturer
AekqjlqA Subscribe to unlock
Engine Model
Nqfcdpe bb Subscribe to unlock
Engine Type
EefkdhAfm Subscribe to unlock
Pounds of Thrust
Bldil Subscribe to unlock
Main Owner
NekhgmpgklbgqpjgjAfAqfkAjmAblmgggkb ip q ejqjcAjcephdhifbhqmmin mjdgbcA mnhinlbqhgnA Subscribe to unlock
Incident Facts

Date of incident
Aug 20, 2023

Classification
Accident

Airline
Alaska Airlines

Flight number
AS-1288

Departure
Seattle, United States

Destination
Santa Ana, United States

Aircraft Registration
N516AS

Aircraft Type
Boeing 737-800

ICAO Type Designator
B738

Airport
John Wayne Airport-Orange County Airport, Santa Ana

Airport ICAO Code
KSNA

This article is published under license from Avherald.com. © of text by Avherald.com.
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