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The Plane Lock

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Part# 13-03386
MFR Model# 10800


For Cessna C-172-210s, except for the C-177. Prevents the wind from popping your doors open and provides an added measure of security against break-ins.
No tools or STC required. From outside the aircraft, the pilots door is locked by reaching through the window ( prior to closing it) and pushing down the door safety handle. Then, slip the Plane Lock over the window sill and lock the window shut.

Note: The Plane Lock will not work with the modified bubble window for photography.
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -



The Plane Lock does NOT fit bubble windows!

Ruben A Verified Purchase


April 21, 2023

High quality and exactly as described.

Ken M
January 25, 2021

I originally purchased this as a temporary measure to secure the left door of our R182, while awaiting a new door clutch assembly but I see its value as an additional security measure and will continue to use it regardless of how well the new clutch works.

January 20, 2019

Its still a little too big for my 210A even with the shim. But its working for now and Im going to make a thicker shim for my thin doors. Other than that it will do the job nicely!

October 1, 2017


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Is there a key for this lock? Will is work with a Cessna 172 M model?

Yes, this set includes wire and 2 keys. It works on Cessna 172-210, except 177.

Q: How exactly does this work? Want something suitable for keeping doors shut in flight. They have a tendency to pop open.

We looked at one here and it looks to us that it hooks on to the window and holds the door latch so it cannot be opened, kind of like a club. We do not think that it can be used during flight.

Q: What is the exact weight of this Plane Lock device?

2.23 lbs

Q: Would I be able to order extra keys for the Plane Lock?

This set ships with wire and 2 keys. No, extra keys are available from the manufacturer. You would need to get the keys duplicated by a locksmith.

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