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Sharing a Grumman AA-5A

21 Grumman AA-5As in the US are registered to co-owners who aren't married to each other — ranking #77 nationwide among all shared general aviation aircraft models (July 2026). Here's what those partnerships look like and what each partner actually pays.

Co-Owned Count

21

FAA Registry Data
National Rank

#77

Of 79 top shared models
Median Year

1977

Manufacture Year
Partnership Split

2 Owners: 19

3: 2 | 4: 0 | 5+: 0

Worked Cost Example: Grumman AA-5A

Direct operating cost for a 2-partner group — the most common Grumman AA-5A arrangement on the registry — flying 100 hours a year between them. These are the costs of running the aircraft, not a club rental rate, which would add a margin on top.

Lycoming O-320/O-360. 9 gal/hr at $6.75, plus $30k overhaul spread over 2000 hours, plus $10/hr for oil, tyres, brakes and the prop fund. Check them against your own hangar, insurance and shop rates before using them for anything that matters.

Fixed Monthly Overhead (Hangar + Insurance + Annual)$600/mo
Fixed Dues per Partner (2 partners)$300.00/mo
Operating rate (fuel + consumables)$71/hr
Engine reserve (TBO 2000 hrs)$15/hr
Total billed per hour$86/hr
Partner True Monthly Cost

$658.33 / partner / mo

Calculated at 50 hrs/yr per partner (8.3 hrs/mo total group flight time). Fixed dues cover fixed overhead, while flight hours bill exact operating time plus engine overhaul escrow.

Interactive Grumman AA-5A Cost Calculator

Where Grumman AA-5A Aircraft Are Shared

The top US states with the highest concentration of registered co-owned Grumman AA-5A aircraft:

IN

Indiana

2 sharedCA

California

2 sharedFL

Florida

2 sharedWA

Washington

2 sharedTX

Texas

2 shared

Frequently Asked Questions

How many Grumman AA-5A aircraft are co-owned in the US?

According to official FAA registry data as of July 2026, there are 21 co-owned Grumman AA-5A aircraft registered in the United States, making it the #77 most popular shared aircraft model.

What is the typical partnership size for a Grumman AA-5A?

Of the 21 co-owned Grumman AA-5A aircraft on the registry, 19 are held by two owners, 2 by three, 0 by four and 0 by five or more. Most Grumman AA-5A groups therefore run with 2 partners, which is the split used in the worked example above.

What are the main states where Grumman AA-5A aircraft are co-owned?

The top states for co-owned Grumman AA-5A aircraft are Indiana (2), California (2), Florida (2), Washington (2), Texas (2).

What should the hourly engine reserve be on a Grumman AA-5A?

The Grumman AA-5A runs a Lycoming O-320/O-360. A field overhaul is around $30k against a 2000-hour TBO, which works out at roughly $15.00 per hour set aside. Partnerships that skip this end up asking each other for a four-figure cheque when the engine reaches TBO.