CHI90IA070

1990-01-20 · CEDAR RAPIDS, Iowa, United States · None · 1 aircraft · Status: Completed

Airport CID

Aircraft involved

N338UA Boeing B737-300 None

Probable cause & findings

THE FAILURE OF ALL FOUR MAIN LANDING GEAR TIRES ON TAKEOFF DUE TO THE PARKING BRAKE BEING LOCKED.

Factual narrative

ALL FOUR MAIN LANDING GEAR TIRES FAILED DURING THE TAKEOFF ROLL JUST PRIOR TO ROTATION. THE PARKING BRAKE HAD BEEN SET ON THE ICY RUNWAY TO DO AN ENGINE RUNUP. THE CAPTAIN STATED HE HAD RELEASED THE BRAKES AT THE BEGINNING OF THE ROLL, AND THE COPILOT SAID HE HAD HEARD THE BRAKES RELEASE. HOWEVER, NEITHER PILOT HAD CHECKED TO SEE IF THE RED PARKING BRAKE LIGHT WAS ON. POST INCIDENT INSPECTION REVEALED BOTH THE CAPTAIN'S AND COPILOT'S PARKING BRAKE ACTUATION RIGGING TO BE OUT OF ADJUSTMENT. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1990_CHI90IA070.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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