G.91 YS

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VTOL | Rank 5 USSR
Yak-38 Pack
G.91 YS
G.91 YS
10.0 9.7 9.7
Research:390 000 Specs-Card-Exp.png
Purchase:1 000 000 Specs-Card-Lion.png
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This page is about the Italian jet fighter G.91 YS. For other uses, see G.91 (Family).


GarageImage G.91 YS.jpg

The G.91 YS is a rank VI Italian jet fighter with a battle rating of 10.0 (AB) and 9.7 (RB/SB). It was introduced in Update 1.87 "Locked On".

General info

Flight Performance

Describe how the aircraft behaves in the air. Speed, manoeuvrability, acceleration and allowable loads - these are the most important characteristics of the vehicle.

Max Speed
(km/h at 0 m - at sea level)
Max altitude
Turn time
Rate of climb
Take-off run
1,114 1,109 12500 29.5 30.7 60.4 54.6 750
Max Speed
(km/h at 0 m - at sea level)
Max altitude
Turn time
Rate of climb
Take-off run
 ???  ??? 12500  ??.?  ??.?  ??.?  ??.? 750


Combat flaps Take-off flaps Landing flaps Air brakes Arrestor gear
Wing-break speed
Gear limit
Combat flaps
Max Static G
+ -
620 ~11 ~4
Optimal velocities
< 800 < 650 < 660 N/A
Compressor (RB/SB)
Setting 1
Optimal altitude 100% Engine power WEP Engine power
0 m 1,230 kgf 1,894 kgf

Survivability and armour

Examine the survivability of the aircraft. Note how vulnerable the structure is and how secure the pilot is, whether the fuel tanks are armoured, etc. Describe the armour, if there is any, and also mention the vulnerability of other critical aircraft systems.


Offensive armament

Main article: DEFA 552 (30 mm)

The G.91 YS is armed with:

  • 2 x 30 mm DEFA 552 cannons, nose-mounted (125 rpg = 250 total)

Suspended armament

The G.91 YS can be outfitted with the following ordnance:

  • Without load
  • 2 x 500 lb LDGP Mk 82 bombs (1,000 lb total)
  • 4 x 500 lb LDGP Mk 82 bombs (2,000 lb total)
  • 2 x 1,000 lb LDGP Mk 83 bombs (2,000 lb total)
  • 4 x 1,000 lb LDGP Mk 83 bombs (4,000 lb total)
  • 76 x FFAR Mighty Mouse rockets
  • 2 x AIM-9B missiles
  • 2 x 500 lb LDGP Mk 82 bombs + 2 x AIM-9B missiles (1,000 lb total)
  • 4 x 500 lb LDGP Mk 82 bombs + 2 x AIM-9B missiles (2,000 lb total)
  • 2 x 1,000 lb LDGP Mk 83 bombs + 2 x AIM-9B missiles (2,000 lb total)
  • 4 x 1,000 lb LDGP Mk 83 bombs + 2 x AIM-9B missiles (4,000 lb total)
  • 2 x AIM-9B missiles + 76 x FFAR Mighty Mouse rockets

Usage in battles

Describe the tactics of playing in an aircraft, the features of using vehicles in a team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view, but instead, give the reader food for thought. Examine the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).

Manual Engine Control

MEC elements
Mixer Pitch Radiator Supercharger Turbocharger
Oil Water Type
Not controllable Not controllable
Not auto controlled
Not controllable
Auto control available
Not controllable
Auto control available
Combined Not controllable
1 gear
Not controllable


Tier Flight performance Survivability Weaponry
I Fuselage repair Compressor Offensive 30 mm M82
II New boosters Airframe M82-2 LAU-3A
III Wings repair Engine New 30 mm cannons M83
IV G-suit Cover M83-2 AIM-9B

Pros and cons


  • Great turn speed for a jet; on par with the MiG-15 in this area.
  • Can equip AIM-9 Sidewinder missiles.
  • Wide variety of payload options.
  • Decently fast.
  • Two 30 mm DEFA cannons cause more damage than the original 4 x M3 Browning machine guns.


  • Nearly every foe at its rank (ex. F-100D, MiG-19) is faster.
  • Fairly low ammo count for the guns means that you need to be conservative with your ammo.


During the 1960s, Fiat began developing a successor to their previous G.91 fighter, which had thus far managed to obtain a favorable reputation with its operators. Fiat based their new aircraft heavily on the two-seat trainer version of the G.91 and decided outfit the aircraft with two General Electric J85 afterburning engines contrary to the preceding single-engine G.91.

Additionally, the aircraft’s fuselage and wings were enlarged to accomodate for the bigger powerplant and improve handling characteristics, while a slew of other tweaks and upgrades further enhanced the aircraft’s overall design. The new G.91Y performed its maiden flight in December 1966. Testing revealed minor aerodynamic issues which would be resolved on subsequent production aircraft with only minor redesigns.

Production of the G.91Y began with an initial order for 20 pre-production machines, following the manufacturing of two prototypes. This order would eventually go up to 75 aircraft, although only 67 including the initial prototypes were delivered in the end. By the mid 1970s, all outstanding orders for the G.91Y were fulfilled and production had ceased for this variant.

The G.91Y served exclusively with Italian squadrons up until the early 1990s, before being replaced by a more modern counterpart.

The G.91YS was a single prototype conversion of the G.91Y, which followed a requirement issued by the Swiss Air Force. The aircraft allowed installation of American Sidewinder air-to-air missiles, and a Swedish weapons control system. This special prototype first flew in October 1970, but was eventually not accepted into service by the Swiss. The prototype was converted back into service as a regular G.91Y.

- From Devblog


Excellent additions to the article would be video guides, screenshots from the game, and photos.

See also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

  • reference to the series of the aircraft;
  • links to approximate analogues of other nations and research trees.

External links

Italy jet aircraft
Fiat  G.91 pre-serie · G.91 R/1 · G.91 R/4 · G.91 YS
Foreign  ▄F-84F · ▄F-84G-21-RE · CL-13 Mk.4 · ▄F-86K · F-104S
  Vampire FB 52A