The issue is recovery from a botched barrel roll, such as in
inverted stall followed by a high speed dive and too strong
a pull on recovery.


"Big John" wrote in message
...
| Andrey
|
| As has been said in all the posts, the short answer is NO.
172 is not
| certified to do barrel rolls.
|
| However I can barrel roll a 172 only pulling 1 G which
puts no more
| load on airframe than straight and level flight. I have
thousands of
| hours to back up my statement.
|
| A corollary.
|
| Is a 707 certified for barrel rolls? Short answer is NO.
|
| Did a Boeing Test Pilot barrel barrel roll a 707 over the
boat races
| on Lake Washington without any damage to aircraft. YES.
|
| I'm also sure Dudley can barrel roll the 172 without any
problem or
| exceeding any limits.
|
| Long Long answer is don't try to B-roll the 172.
|
| My 1971 172/Skyhawk Owneers manual shows:
|
| Normal Cateory Maneuvers
|
| Max pos G' = 3.8
| Stalls and turns not to exceed 60 degrees of bank.
|
| Utility Caategory Maneuvers
|
| Max pos G's = 4.4
| Chandelles
| Lazy Eights
| Steep Turns
| Spins
| Stalls (Except whip stalls)
|
| Acrobatics that may impose high loads should not be
attempted.
|
|
| Big John
| `````````````````````````````````````````````````` ``````
|
|
| On 20 Jul 2006 04:34:44 GMT, Andrey Serbinenko
| wrote:
|
|
| If kept within the normal category load limits, is 172
certified to do
| barrel rolls?
|
| Andrey
|