Surprised anyone thinks the JP 5 was better than the 4. Quieter yes, but lower t/w
ratio due pressurisation bleed and higher weight. 4 Far better for aeros.
Spinning on the 5 could be very oscillatory , look at the various tweeks on it to try and make it more predictable, ,leading edge roughness, strakes on the nose.
The JP 4 was very predictable in the spin, but I never managed on SCT to spin It inverted, not enough down elevator.
That said, a few of us, QFIs from SORF , did some spinning of Lightning pilots, which included partial control and mishandled recovery techniques with fuel in the tips, that DID get quite exciting but it DID eventually recover, once correct recovery action was taken and held for a few turns !
Aparently the Lightning and JP had similar spin techniques, recovery procedures, but the height loss , however , was in a different league !
But the JP as the best trainer for teaching aeroplane handling, not sure about that, my limited experience on the Harvard suggests not.
Last edited by RetiredBA/BY; 28th Apr 2020 at 17:37.