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ACRO E-mail Archive Thread: [IAC-L:130] RE: Pitts AD on-line

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ACRO E-mail Archive Thread: [IAC-L:130] RE: Pitts AD on-line


Thread: [IAC-L:130] RE: Pitts AD on-line

Message: [IAC-L:130] RE: Pitts AD on-line

Follow-Up To: ACRO Email list (for List Members only)

From: "Ronald Saglimbene" <6Sags at>

Date: Thu, 19 Jun 1997 23:03:28 UTC


Regarding the new NPRM on the longeron AD for Pitts aircraft:

A  review of the original AD states: "Upon investigation of the 
incidents, further analysis and testing show that hard landings and 
snap roll maneuvers in excess of the +6 and -3 gravity (``g'') force 
limits cause enough stress and fatigue to crack the upper longerons. 
This condition, if not corrected, could result in failure of the 
airframe and possible loss of control of the airplane."
Based upon this, if a placard is to be put in the airplane, it should read 
"No positive snap rolls above 160 mph" which is about how fast you have 
to be going in a Pitts in order to generate +6gs in a snap.
It would be nice if the FAA would read it's own material before issuing such 
a restrictive amendment .
Ron Saglimbene   


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