Overview
- The final report finds improper maintenance during a steel‑to‑carbon brake modification caused the Feb. 10, 2024 overrun of Flight 1632 on DFW’s Runway 17L.
- Mechanics had cross‑connected the right main‑gear brake hoses (#3 and #4) and reversed left wheel‑speed transducer wiring (#1 and #2), defeating normal braking control.
- With antiskid outputs reversed, one wheel locked while the opposite lost braking, both outboard tires failed, and the jet stopped in the paved safety area without injuries.
- American updated procedures to require pre‑removal labeling, inspector verification and an operational test, and it inspected 303 737s with no additional wiring swaps found.
- Boeing issued advisories and service guidance to prevent cross‑connections, and the NTSB cited similar maintenance‑related cases from 1995, 2007 and 2008.