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NAAA Appraisal versus
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NAAA Versus BlueBook Values
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What's the difference between an appraisal performed by a member
of the National Aircraft Appraisers Association and an appraisal
performed using one of the aircraft price guides?
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The differences
are enormous and to answer this question would take many pages. Briefly
let us look at some key differences. Aircraft price guides are published,
marketed, and distributed by book publishing companies. The fact is, they
do not appraise aircraft; they do not even gather or generate their own
data. Rather, they simply send out a questionnaire every 3 months to
subscribers of their books and ask a few questions which at best are very
vague. From these questionnaires the book publishers generate their
database.
An interesting point to consider is this, nowhere on these
questionnaires do the price guide book publishers request information
regarding:
 | The aircraft's damage history. |
| Engine or airframe modifications, if any. |
| Make and model of installed avionics and if there were any
Avionic upgrades. |
| Physical condition of the airframe including surface corrosion
etc. |
| Inspection status of the aircraft.
 | For example, the aircraft may have been out of Annual for some
period of time or/and there may be Airworthiness Directives and/or
mandatory Service Bulletins which have not been complied with.
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| Props and time since overhaul. |
| Engine overhaul status.
| For example, was the engine field overhauled to FAA overhaul
service limits or overhauled to factory new limits or a new engine.
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| Condition of de-ice equipment, instrumentation and other
systems and components. |
It is truly a
mystery how one could generate an accurate database of aircraft values
without any indication regarding the condition of the airframe, make and
model of avionics, damage history, airframe or engine modifications and
all of the other important value points listed above.
The National Aircraft Appraisers Association is the only organization in
the world that considers all of these factors in its database.
Additionally, its members who have physically evaluated the aircraft
verify all of the information the National Aircraft Appraisers Association
uses and subscribes to the same evaluation criteria while performing the
appraisal. The end result is an extremely accurate database that is
verifiable.
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