{{Short description|Brazilian light-sport flying boat}} {{Use dmy dates|date=May 2021}} {{Use American English|date=May 2021}} {{Infobox aircraft | name = Seamax M-22 | logo = | logo_size = | image = File:Air Max Sea Max M22 N139LS Lakeland FL 04.09R.jpg | alt = | caption = Seamax M-22 | long_caption = | other_names = | aircraft_type = Amphibious [[light-sport aircraft]] and [[Fédération Aéronautique Internationale|FAI]] microlight | aim = | outcome = | related = | national_origin = Brazil | manufacturer = [[Airmax Construções Aeronáuticas]]<br>[[Seamax Aircraft]] | design_group = | designer = Miguel Rosario | builder = | issuer = | status = In production | owners = | primary_user = | more_users = | service = | major_applications = | proposals = | prototypes = | number_built = 160 (2018)<ref name="auto">{{Cite web|url=https://oglobo.globo.com/economia/saiba-quem-sao-os-pequenos-fabricantes-que-vivem-sombra-da-embraer-22925717|title=Saiba quem são os pequenos fabricantes que vivem à sombra da Embraer|author=Danielle Nogueira|website=[[O Globo]]|date=28 July 2018 |access-date=18 October 2021}}</ref> | construction_number = | civil_registration = | military_serial = | radio_code = | requirement = | aircraft_carried = | flights = | total_hours = | total_distance = | construction_date = | introduction = | retired = | first_flight = 2000 | initiated = | in_service = | last_flight = | expected = | developed_from = | variants = | developed_into = | preservation = | fate = | predecessors = | successors = | concluded = }}

The '''Seamax M-22'''<ref>{{Cite web|url=http://www.anac.gov.br/noticias/2019/anac-reconhece-aeronave-seamax-m-22-como-ale-especial|title=ANAC reconhece aeronave Seamax M-22 como ALE Especial|website=Agência Nacional de Aviação Civil ANAC}}</ref><ref>{{Cite web|url=https://www.seamaxaircraft.com/|title=SEAMAX AIRCRAFT &#124; Light-Sport &#124; Amphibious &#124; United States &#124; Brazil|website=SEAMAX}}</ref> is a Brazilian single-engine, [[Amphibious aircraft|amphibious]] [[light sport aircraft]] (LSA) and [[Fédération Aéronautique Internationale]] microlight. Originally manufactured by [[AirMax Construções Aeronáuticas]] of [[Jacarepaguá]] and called the '''Airmax SeaMax''', since 2015 it has been built by [[Seamax Aircraft]] of [[São Paulo]].<ref name="WDLA11">Bayerl, Robby; Martin Berkemeier; et al: ''World Directory of Leisure Aviation 2011-12'', page 23. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X</ref><ref name="WDLA15">Tacke, Willi; Marino Boric; et al: ''World Directory of Light Aviation 2015-16'', page 79. Flying Pages Europe SARL, 2015. {{ISSN|1368-485X}}</ref>

==Design and development== The Seamax M-22 was designed in 1999. A prototype was flown in 2000 and the first production aircraft left the factory in 2001. The Seamax M-22 is constructed using composite materials and metal components. It has a two-seat, [[side-by-side configuration]] cabin with a [[bubble canopy]] which is hydraulically raised for access. The [[high-wing]] is [[strut-braced]] and the tail is a [[cruciform tail]]. The aircraft's [[tricycle landing gear]] is retractable for landing on water. It is powered by a {{convert|100|hp|kW|0|abbr=on}} [[Rotax 912ULS]] [[pusher configuration]] engine mounted above the wing to avoid water ingestion.<ref name="WDLA11"/>

Versions can be constructed to meet the requirements of both the European microlight and US LSA categories.<ref name="WDLA15"/> A version with folding wings is available as the M-22 FW.<ref>{{cite journal |last1=Caldwell |first1=Kris |title=SEAMAX M-22 FW |journal=EAA Sport Aviation |date=April 2023 |volume=74 |issue=4 |pages=30- 34}}</ref>

A total of 160 had been built by 2018.<ref name="auto"/>

== Operational history == In October 13, 2025, one of the Seamax M-22 units, registered under PU-DNA [[Aviation call sign|call sign]] at [[National Civil Aviation Agency of Brazil]] suffered an [[Aviation accidents and incidents|accident]] (crash) in Setor Santos Dumont, in the [[Brazil|brazilian]] [[Goiânia]] city. The [[Aircraft pilot|pilot]] survived with [[Bruise|bruises]] and there were no fatalities.<ref>{{Cite web |date=2025-10-13 |title=Queda de avião em Goiânia: Monomotor atinge casa |url=https://g1.globo.com/go/goias/noticia/2025/10/13/aviao-de-pequeno-porte-cai-sobre-casa-em-goiania.ghtml |access-date=2025-10-13 |website=G1 |language=pt-br}}</ref><ref>{{Cite web |last=Bittencourt |first=Alexandre |last2=Goiás |first2=Mais |date=2025-10-13 |title=Avião cai no setor Santos Dumont, em Goiânia; vídeo |url=https://www.maisgoias.com.br/cidades/aviao-cai-no-setor-santos-dumont-em-goiania-video/ |access-date=2025-10-13 |website=Mais Goiás |language=pt-BR}}</ref>

==Specifications== [[File:AirMax SeaMax Hämeenlinna 1.JPG|thumb|SeaMax in Linnasalmi, [[Hämeenlinna]]]] {{Aircraft specs |ref=Bayerl<ref name="WDLA11" /> |prime units?=met<!-- imp or kts first for US aircraft, and UK aircraft pre-metrification, met(ric) first for all others. You MUST choose a format, or no specifications will show --> <!-- General characteristics --> |genhide=

|crew=one |capacity=one passenger |length m= |length ft= |length in= |length note= |span m=8.75 |span ft= |span in= |span note= |height m= |height ft= |height in= |height note= |wing area sqm=12.24 |wing area sqft= |wing area note= |aspect ratio= |airfoil= |empty weight kg=300 |empty weight lb= |empty weight note= |gross weight kg=520 |gross weight lb= |gross weight note= |fuel capacity={{convert|96|L}} |more general= <!-- Powerplant --> |eng1 number=1 |eng1 name=[[Rotax 912ULS]] |eng1 type=four cylinder, liquid and air-cooled, [[four stroke]] |eng1 kw=75<!-- prop engines --> |eng1 hp=<!-- prop engines -->

|prop blade number=<!-- propeller aircraft --> |prop name= |prop dia m=<!-- propeller aircraft --> |prop dia ft=<!-- propeller aircraft --> |prop dia in=<!-- propeller aircraft --> |prop note=

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|max speed kmh=210 |max speed mph= |max speed kts= |max speed note= |cruise speed kmh=195 |cruise speed mph= |cruise speed kts= |cruise speed note= |stall speed kmh=58 |stall speed mph= |stall speed kts= |stall speed note= |never exceed speed kmh= |never exceed speed mph= |never exceed speed kts= |never exceed speed note= |range km= |range miles= |range nmi= |range note= |endurance=<!-- if range unknown --> |ceiling m= |ceiling ft= |ceiling note= |g limits= |roll rate=<!-- aerobatic --> |glide ratio=<!-- sailplanes --> |climb rate ms=5 |climb rate ftmin= |climb rate note= |time to altitude= |sink rate ms= |sink rate ftmin= |sink rate note= |lift to drag= |wing loading kg/m2= |wing loading lb/sqft= |wing loading note= |power/mass= |thrust/weight= |more performance= |avionics= }}

==See also== {{aircontent <!-- include as many lines as appropriate. separate additional lines/entries with carriage returns. --> |see also= |related=<!-- related developments --> |similar aircraft= *[[AeroVolga Borey]] *[[EDRA Aeronautica Super Pétrel]] *[[Icon A5]] *[[LISA Akoya]] *[[MVP Model 3]] *[[Nordic Omsider]] *[[Progressive Aerodyne SeaRey]] *[[Seawind International Seawind]] |lists= *[[List of flying boats and floatplanes]] }}

==References== {{commons category|AirMax SeaMax}} {{reflist}}

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[[Category:2000s Brazilian civil utility aircraft]] [[Category:Amphibious aircraft]] [[Category:Light-sport aircraft]] [[Category:High-wing aircraft]] [[Category:Single-engined pusher aircraft]] [[Category:Aircraft first flown in 2000]]