Forgotten Nose Gear Safety Pin Preceded KSUS Gulfstream IV Excursion | Aviation International News

Forgotten Safety Pin Preceded Gulfstream IV Excursion

Airplane veered into grass with no injuries reported

Screenshot 2026-09-14 at 8.07.17 AM — A Gulfstream G-IV’s nose gear pip pin was found separated, missing a ball lock, after its safety pin went uninstalled, the NTSB preliminary report says. © Image from NTSB report

By Amy Wilder • Writer

September 14, 2026

A Gulfstream IV’s nose landing gear pip pin was found separated after a runway excursion on landing at Spirit of St. Louis Airport (KSUS) in Missouri, according to a newly released NTSB preliminary report. The airplane sustained substantial damage to the lower fuselage and left wing in the Aug. 14, 2026 accident. None of the three crewmembers or seven passengers aboard were injured.

According to the pilot, ground crew personnel at Eagle County Regional Airport (KEGE) in Colorado were unable to install the pip pin, a component used to engage and disengage the scissor link with the nose wheel steering actuator, into the nose landing gear (NLG) torque link during the preflight inspection. The pilot then installed the pip pin himself. The pip pin has a secondary safety pin normally installed to help ensure it remains engaged; the pilot reported that he forgot to install it.

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