Lynx Mk 21
Brazil ASW/ASUW rolled Mk21 was closely based on the
baseline RN HAS. Mk2, with Gem 2 Mk 1001 engines rated
at 900 shp (671 kw), and later armed with Sea Skua ASMs,
Mk9 deph charges or Mk46 torpedoes.
The first made its maiden flight on 30 Sptember 1977.
Nine were built (the last flight on 14 April 1978). They
were locally referred to as SAH-11, and equipped
Esquadrão de Helicopteros de Esclarecimento e Ataque 1
(HA-1) at São Pedro da Aldeia from 1978.
The Lynxes can operate from any of the Brazilian Navy´s
diverse fleet of destroyers and frigates, “Niteroi” Class (RN Type
21), "Greenhalgh" Class (RN Broadword), "Inhaúma" Class,
"Para" Class (only one).
The "Inhaúma" Class is the smallest deck for night
operations with the Lynx, in all Lynx operators.
Five were subsequently converted to Mk21A standards.
Super Lynx Mk 21A
The original Lynx Mk21 was popular in Brazil, despite a
relatively heavy attrition rate, and it came as no real
surprise that the Brazilian Navy became the third export
customer for the Super Lynx. An intention to order a
follow-on batch of Super Lynx was announced in 1991.
Brazil took delivery of 14 Super Lynxes, nine newly
built (N4001-N4009) and five (N4010-N4014) produced by
the conversion of existing Mk21s, in a £150 million deal
signed in 1993. The Brazilian Lynxes lacked CTS and FLIR,
but were equipped with the 360º Seaspray 3000 radar,
Doppler 71 and RNS252 INS, and have provision for FLIR,
recce pods or a “dunking” sonar. The aircraft are
powered by the Gem 42-1, with composite main rotor
blades and the reverse direction tail rotor.
The aircraft also feature a new
bolted main rotor head raises maximum AUW to 11,750lb
(5330kg). The first airframe for conversion (N3027) was
redelivered to Yeovil on 1 February 1995, and the first
in its new configuration on 23 March 1996. the first
new-build Mk21A (N4001) made its maiden flight on 12
June 1996, and was handed over to the customer in July
The Mk21A is powered by a pair of Gem 42-1 engines, each
rated at 1,120shp (836kw).