Accident · 2023-08-20
What the record says
- Event date
- 2023-08-20
- Event type
- Accident
- Highest injury level
- No injuries
- Aircraft
- BOEING 737-890 (N516AS)
- Operating rule
- Part 121
- Operator
- ALASKA AIR INC Operator named in NTSB report
- Operated by (per NTSB report)
- Alaska Airlines
Probable cause
Maintenance personnel’s excessive grinding of the left main landing gear’s aft trunnion pin during machining, which imparted heat damage to the base metal and led to the fatigue cracking that caused the pin to fracture during landing.
Source: NTSB case DCA23FA417Flight crew
Certification and experience as recorded in the NTSB accident database for this event. The NTSB records these facts about the crew's flying history; GroundCheck shows them as filed, without names or identities.
| Role | Certificate | Instrument rating | Age | Medical | Flight hours |
|---|---|---|---|---|---|
| Pilot pilot flying | Airline transport pilot | None | 57 | Class 1 (2023-04-10) | 20,403 total · 10,837 in this make/model · 10,858 as PIC · 77 last 90 days |
| Co-pilot | Airline transport pilot | None | 52 | Class 1 (2022-12-02) | 10,705 total · 483 in this make/model · 1,200 as PIC · 254 last 90 days |
Facts as the NTSB records them — GroundCheck adds no judgement. Preliminary records may be revised as the investigation proceeds.