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Type certificate A33SO

Held today by Amphibian Aerospace Industries Defense, INC., A Delaware Corporation (Delaware File No. 10288788), C/O Dunlap Bennett & Ludwig, Pllc, earlier by Grumman\Air Crane\Inc., Grumman\Air Crane INC.. It covers 9 models; about 33 aircraft on the U.S. register are built to it. Last revised April 27, 2026 (revision 12). 2 FAA orders name its designs, and 6 approved modifications build on it.

Models under this certificate 9

HU-16E (UF-2G), HU-16B, HU-16A, HU-16D (UF-2), Wright F1820-76A, Wright F1820-76B, Wright F1820-76C, Wright F1820-76D, HU-16C (UF-1, UF-1G)

On this site

Grumman HU-16 33 registered

The data sheet on the FAA's site: the approved engines and propellers, weights, speeds and limits for each model.

FAA orders on these designs 2 · newest first

2026-07-012026-13-02 · Navigation · instruments and avionics
2023-05-262023-10-02 · Indicating/Recording System, Navigation · instruments and avionics

Approved modifications 6 · companies holding the most

Cies INC. 2Wipaire INC. 1Ceconite Division of Poly-Fiber INC. 1Ceconite Division of Poly-Fiber INC 1Aviation Products Systems INC. 1

Source: FAA type certificate data sheets (Dynamic Regulatory System); register counts from the FAA register of October 7, 2026. Connections as data: /graph/certificate/A33SO.json.