1. o Changed Teflon Nose Configuration ( First 9")
2. 5-10 KFT increase in hi 8 flights
3. ht is 30-50 KFT higher on SP 7 flights
4. VE ,yE and instrumentation 10-15 KFT variation in $ 5 flights
5. B Data Quality - Early Vintage (Pre 1973) Versus Late Vintagc (Post 1973)