Cessna 182T Cracked Firewall Doubler A 1.5-inch long crack was discovered in the forward firewall doubler (p/n 0753600-24). The crack was located on the lower left quadrant of the doubler, and was centered around the top rivet attaching the parking brake control bracket to the 288
Cracks, Adjustments
A 1.5-inch long crack was discovered in the forward firewall doubler (p/n 0753600-24). The crack was located on the lower left quadrant of the doubler, and was centered around the top rivet attaching the parking brake control bracket to the firewall and firewall doubler.When the parking brake handle is pulled, this area of the firewall and doubler flex. The submitter suggests it is very probable that this flexing action has caused this crack.
Key Takeaways:
- A Cessna 182T developed a 1.5-inch crack in its firewall doubler, likely caused by repeated flexing from parking brake operation.
- Engine malfunctions included a Cessna 402C's right engine quitting due to misadjusted fuel injection, and a Continental O-470R's catastrophic failure from a cracked case, possibly linked to its age (17 years since overhaul) and use of auto fuel.
- An Artex ME-406 ELT repeatedly failed to turn off or reset after testing, indicating a persistent functional issue.
- A Mooney M20R experienced a standby vacuum system failure due to a deteriorated rubber hose contaminating and freezing the electric vacuum pump.
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