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I had a very helpful reply from the Altenrhein Museum.
They have been flying their Avon 200 series two-seater with 'Ops approved' ejection limits of Ground level - 160 km/h (ie 90 kts approx) which suggests that on retirement they were still fitted with the original Mk 4 seats. Additionally the seat occupant limits were Maximum occupant weight 100 kg, height 200 cm. Servicing is getting very expensive.
As to whether the single seaters had Mk 3 or Mk 4 seats on delivery there was no info, so my interest now would centre on whether the Swiss single seaters Mk 3 seats had (or ended up with) the same Mk 4 Ground level - 90 kts limits, or stayed with the earlier Mk 3 limits of 200 ft/120 kts.
The Mk 3 seats with 200 ft/120 kts resulted in some distressing accidents which resulted in RN Vampire T22s being retrofitted with ex Sea Venom Mk 4 seats in the mid 60s. So - it can be done. Good move too.
However - defo nothing rockety for the Swiss, so beers on me - but only in our pub.
LFH
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