C172 crash at Coney Island

The preliminary NTSB report is online now.
http://www.ntsb.gov/NTSB/brief.asp?e...26X00678&key=1

There appears to be no indication of engine failure, fuel exhaustion, fire,
or control malfunction. The fuel controls (throttle idle and bent; mixture
rich; both tanks selected) are consistent with spin recovery procedures.
Weather was benign. The weights of the persons on board are not mentioned.

--Gary

But 30 degree flap deployment is not what I would use for spin recovery.

Sounds more like a spin following an approach to landing.

Note that the report states that "the crankshaft flange that the propeller
assembly was attached to, was separated from the engine"

Perhaps the engine was running but not turning the prop.



"Gary Drescher" wrote in message
...
The preliminary NTSB report is online now.
http://www.ntsb.gov/NTSB/brief.asp?e...26X00678&key=1

There appears to be no indication of engine failure, fuel exhaustion,
fire, or control malfunction. The fuel controls (throttle idle and bent;
mixture rich; both tanks selected) are consistent with spin recovery
procedures. Weather was benign. The weights of the persons on board are
not mentioned.

--Gary

....or that could be impact damage. 500 feet seems low, but that's what
the corridor allows. 30 degrees of flaps... I speculate that slow
flight was being demonstrated. For some reason, the plane slowed past
the stall point at an angle and entered a spin, then had insufficient
altitude to recover.

I'm no expert, but it seems like one plausible scenario that could fit
the evidence.

I wonder if... what if he was working to avoid busting into Class
Bravo, and the maneuvering to do so resulted in an inadvertent loss of
lift?

"Ben Hallert" wrote in message
oups.com...
I wonder if... what if he was working to avoid busting into Class
Bravo, and the maneuvering to do so resulted in an inadvertent loss of
lift?

He was apparently circling at 500', but the Class B at Coney Island begins
at 1500'.

--Gary

Sorry - Sounds to me like C172 with 4 adults + full fuel in slow flight with
too much bank angle = aggravated stall....

RjL




"Gary Drescher" wrote in message
...
"Ben Hallert" wrote in message
oups.com...
I wonder if... what if he was working to avoid busting into Class
Bravo, and the maneuvering to do so resulted in an inadvertent loss of
lift?

He was apparently circling at 500', but the Class B at Coney Island begins
at 1500'.

--Gary

"Ben Hallert" wrote in message
...or that could be impact damage. 500 feet seems low, but that's what
the corridor allows. 30 degrees of flaps... I speculate that slow
flight was being demonstrated. For some reason, the plane slowed past
the stall point at an angle and entered a spin, then had insufficient
altitude to recover.

Maybe not slow flight. An instructor would, probably, not do this on a
sightseeing tour and without sufficient recovery altitude. But, speculation
on that aside, I often use a notch or two of flaps when doing a sightseeing
tour. Gives a bit more nose down attitude. Maybe it was that.

moo

"Happy Dog" wrote in message ...
"Ben Hallert" wrote in message
...or that could be impact damage. 500 feet seems low, but that's what
the corridor allows. 30 degrees of flaps... I speculate that slow
flight was being demonstrated. For some reason, the plane slowed past
the stall point at an angle and entered a spin, then had insufficient
altitude to recover.

Maybe not slow flight. An instructor would, probably, not do this on a sightseeing tour and without sufficient
recovery altitude. But, speculation on that aside, I often use a notch or two of flaps when doing a sightseeing tour.
Gives a bit more nose down attitude. Maybe it was that.

moo


Yup 10° flaps for that sort of flying...