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-   -   HASELL (https://www.pprune.org/private-flying/508496-hasell.html)

The500man 21st February 2013 09:40

For 'Location' I was taught the five Cs.

Clear of Crowds, Clouds, Cities and Controlled airspace.

fireflybob 21st February 2013 12:41


In a PA28 just doing stalls, it only really refers to flaps.
Also a check that you are within the Utility Category

Big Pistons Forever 21st February 2013 16:05


Originally Posted by BackPacker (Post 7706790)
There were a few times where I started aerobatics with the fuel pump switched off. As this was in an aircraft with carbureted engine, it takes significantly longer for the engine to restore power after inverted flight. Only then did I remember that I had forgotten the whole HASELL check.

For me, the Airframe check is a quick glance round the cockpit to check whether everything is how it's supposed to be. Flaps up, carb heat off, fuel pump on, canopy closed and locked, loose objects stowed, instrument settings correct, G meter reset to 0, trim set and so forth. To a very large extent it follows the same flow as the pre-take-off checks.

It seems to me that if you started a manoever with the fuel pump off then you did not properly complete the " E " (engine) part of the HASEL check.

Like I said earlier I can't see a lot of value in the "Airframe" check. Personally I think it is an "Air Force ism" appropriate to the high performance aircraft that they fly, but just mindlessly carried over to light aircraft operations and passed down from instructor to instructor with no critical thought as to whether it actually had any value.

Also there is no requirement for any of the PA 28 140 or C 172 series aircraft to be in the utility category to do stalls.

BEagle 21st February 2013 17:24

Location = Clear of A, B, C and D

Active aerodromes
Built-up areas
Controlled airspace
Danger areas.

Incidentally, 'A' is indeed for 'airframe'. It's not just 'airframe = flaps up', there will be occasions when other configurations are deliberately used - such as flaps extended, landing gear down etc etc. Also, if you're going to be spinning, it is an opportune point at which to recall the max. fuel imbalance permitted, although that could also be covered under 'E' for engine.

The transfer of military methods into civilian practice is often eroded over the course of time - such as the misuse of 'P_A_T' as 'A_P_T' instead of 'S_H_T', for example. But I was taught the same HASELL checks in Cessna 150s back in 1968 as I was in RAF Chipmunks, Jet Provosts, Gnats, Hunter, Bulldogs etc etc over the years, so it is emphatically NOT

an "Air Force ism" appropriate to the high performance aircraft that they fly, but just mindlessly carried over to light aircraft operations and passed down from instructor to instructor with no critical thought as to whether it actually had any value.

Actually, I'm surprised you don't advocate conducting one of your half hour monologues before stalling, BPF.....

Tay Cough 21st February 2013 19:44

The way I was taught:

H is Height. Sufficient for recovery by whatever minimum you choose to apply. The RAF always had 3000ft AGL which has generally stuck in civilian training, although it was always the height to abandon after a failed spin recovery. Few civvies wear chutes.

A is Airframe (UK). Gear, flaps and should also include "Brakes Off". Some types can have their rudder travel limited with partial brake (Chippy for one, I think).

S is Security. Harnesses, hatches, loose articles.

E is Engine. T&Ps, fuel state, carb heat, etc.

L is Location. Clear of cloud, controlled airspace, congested areas.

L is Lookout. Either one turn or two, totalling 180 degrees.

Big Pistons Forever 21st February 2013 20:03


Originally Posted by BEagle (Post 7707719)
Location = Clear of A, B, C and D

Active aerodromes
Built-up areas
Controlled airspace
Danger areas.

Incidentally, 'A' is indeed for 'airframe'.

Actually, I'm surprised you don't advocate conducting one of your half hour monologues before stalling, BPF.....

I think we have taken up enough band width on a pretty trivial issue. I am sure that you will agree that the important point is that prior to conducting manoevers that may result in high pitch or bank angles, an organized check of the factors that could degrade the safety of the exercise should be carried out.

I would also hope that you agree that this Check should not be mindlessly rattled off , but rather a clear understanding of the factors actually relevant to the configuration and position of the aircraft and to the manoever being carried out, should be present.

I am rather offended by your comment about a " half hour monologue before stalling" I would not and have not ever advocated such silliness. I am happy to see people disagree with what I have said as it forces me to re-evaluate what I post and the debate gives every reader things to be think about ; however if you are going to take a shot at me at least do me the favor of being accurate......

fireflybob 21st February 2013 21:31


Also there is no requirement for any of the PA 28 140 or C 172 series aircraft to be in the utility category to do stalls.

(a) Normal Category – All acrobatic maneuvers including spins prohibited.
Depends how you define "acrobatic" I guess - if you're practising stalling there is always the possibility of it turning into such if a wing drop develops.

mary meagher 21st February 2013 21:32

for gliders - before stalls or spins (to be considered before taking off! and again just before maneuver)

Height - not below 900 feet.
Airfame - check VNE
Security - straps tight, no loose objects.
(E ? if you have an engine, be sure it is stowed!)
L - Location - not over active airfield or habitations
L - LOOKOUT! And this is really important. In a glider first do a well banked 180 turn, and then reverse the turn 180 the other way; so other gliders won't think you just found a juicy thermal....

Big Pistons Forever 21st February 2013 22:19


Originally Posted by fireflybob (Post 7708142)
Depends how you define "acrobatic" I guess - if you're practising stalling there is always the possibility of it turning into such if a wing drop develops.

The Cessna C 172 POH is quite specific on this issue.

From the limitations section of the C 172 M,N,P,R,S models POH

Quote

This airplane is certified in both the normal and utility category. The normal category is applicable to aircraft intended for non aerobatic operations.These include any maneuvers incidental to normal flying, stalls (except whip stalls), lazy eights, chandelles and turns in which the angle of bank is not more than 60 degrees

Unquote

flyinkiwi 21st February 2013 23:27


Originally Posted by Tay Cough
H is Height. Sufficient for recovery by whatever minimum you choose to apply. The RAF always had 3000ft AGL which has generally stuck in civilian training, although it was always the height to abandon after a failed spin recovery. Few civvies wear chutes.

A is Airframe (UK). Gear, flaps and should also include "Brakes Off". Some types can have their rudder travel limited with partial brake (Chippy for one, I think).

S is Security. Harnesses, hatches, loose articles.

E is Engine. T&Ps, fuel state, carb heat, etc.

L is Location. Clear of cloud, controlled airspace, congested areas.

L is Lookout. Either one turn or two, totalling 180 degrees.

Exactly the way I was taught. Also include cowl flaps and speed brakes in the Airframe section. In a nutshell, Airframe is confirmation that the aircraft is configured correctly in the aerodynamic sense for the given maneuver(s) you are attempting. If it's attached to the outside of the aircraft and is configurable you account for it here.


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