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As proposed by the FAI (Fliegerartzliches Institut – Aeromedical Institute), during 1952 the DMP began a series of preliminary tests on a single DH-100 Vampire (J-1064) modified by fitting an anti-g system,  in order to assess risks and benefits related to the use of anti-g suits.

6 US Navy Z-2, one  for each pilot assigned to test, purchased .

The aim of the test was to assess the increase of the crews resistance to accelerations, but at the same time it was feared that the same resistance would bring pilots to exceed the structural limits of the aircraft.

The results were positive, the Vampire not bent. :)




In order to have a larger evaluation database, between 1953 and 1954, 48 Vampires were fitted with the anti-g installations and assigned to the FlSt. ( Squadrons ) 8 and 9, both planned for their TK (Training course) at Interlaken AFB during the summer.

A number of USAF G-4-B anti-G suits purchased and distributed to pilots. They were required to fly different flight profiles and report their impressions on appropriate forms. 

The tests had positive results, only reported problem the hassle given by the engine bleed hot air used for the activation of the suit, quite annoying during summer. 

The pilots required the application of a notepad holder on the right and a map clip on the left leg, as on the flight suits.

On this basis, it was decided to equip all front squadrons with anti-G equipment.

A first set of 100 G-4-B (enough to equip 5 squadrons), along with components required to modify the aircrafts, were ordered in 1954.




In 1956, the approved defence budget planning included  the purchase of a supplemental batch of 270 G-4-B; however, the selected provider, David Clark, notified the difficulty of keeping the signed agreements as in difficulties in obtaining certain obsolete components.

David Clark C apologized and "humbly request your accepting the MB-2 Anti-g pneumatic Flying Suits and cancelling your requirement for the obsolete type G-4-B". 

The model change was accepted and MB-2s ordered based on the "Armed Service Technical Agency, Report No. AD. 30380" provided with the David Clark notification, where the MB-2 described as having the good features of both models Z-2 and


CSU-13A/ P





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