Air Force investigating in-flight mechanical issue on Luke F-35

The Lightning II pilot radioed a code 7700, which flags an airborne emergency to air traffic control, around 1:10 p.m. local time on June 15.

F-35 Lightning II performs hot pit exercise at Luke - The Thunderbolt - Luke AFB

Flashlight damages $14 million F-35 fighter jet engine beyond repair, report says

F-35 Lightning II performs hot pit exercise at Luke - The Thunderbolt - Luke AFB

Lockheed Martin F-35 Guide

$14M engine of US Air Force F-35 is destroyed after maintenance engineer left FLASHLIGHT inside it before test run

Investigators release report on what damaged an F-35 engine at Luke Air Force Base

Report to Congress: Out of Breath - Military Aircraft Oxygen Issues - USNI News

F-35 Lightning: The Joint Strike Fighter Program - Defense Industry Daily

Report to Congress: Out of Breath - Military Aircraft Oxygen Issues - USNI News