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This question answers how much it costs to convert a given aircraft from passenger to freighter once the STC is approved by the FAA. How much does it cost to obtain the STC in the first place?

If this data is not publicly available, would there be a generic way to estimate the cost of such a conversion?

Related Question: From what I've found the required design and analysis is primarily focused on the modification of the aircraft structure (as opposed to e.g. flight controls), and to some extent related to the avionics that monitor the health of the various onboard aircraft systems (e.g. ensure that no warnings/errors are displayed to the flight crew as a result of the absence of the passenger entertainment system).

Does that imply that the cost to generate the certification basis for the initial conversion would be fairly comparable across different aircraft? I realize that the labor of the actual conversion (once approved) will differ based on the size of the aircraft.

By way of example - how much would the required analysis differ between the cargo versions of the CRJ-200 and the B737-800BCF?

Cargo Version of the CRJ-200:

Cargo Version of the CRJ-200

Cargo Version of the 737-800:

Cargo Version of the Boeing 737-800

nodapic
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  • Bit of a "how long is a piece of string?" question perhaps? Depends on the size of the aircraft, air-frame materials, intended cargo... ...can you be more specific? – James Geddes Jul 31 '20 at 13:41
  • That's kind of the "related question". If you're going to add a cargo door to a CRJ200 or a 737-800 that fits your traditional ULD cargo containers (e.g. LD-3, ASZ, SAA, etc.), does that work generalized across aircraft. By comparison: a former Honeywell DER once explained to me that a Fly-By-Wire flight control system is ~5000 requirements that need to be traced, verified, coded, and tested, no matter what aircraft if goes into. Can the same be said about structural modifications such as a P-t-F conversion? Also, "how long is a piece of string?" <-- great expression! – nodapic Aug 01 '20 at 22:23

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