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The first JF-17 has been overhauled by Pakistan.

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Well if it is not clear if we did the overhauling or the Chinese this time around....one thing is certain, if we do this then more money will come into the program when we start overhauling JF-17 of friendly forces!!
 
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JF-17 Overhaul contract was signed with a "2+2 model", "the first step was to test two aircraft in China and get through the technical path of aircraft overhaul. and Second step is Pakistan perform the two aircraft Overhaul Facility"

This Overhaul also includes generation change from 3rd to 4th generation JF-17 Aircraft.
 
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JF-17 Overhaul contract was signed with a "2+2 model", "the first step was to test two aircraft in China and get through the technical path of aircraft overhaul. and Second step is Pakistan perform the two aircraft Overhaul Facility"

This Overhaul also includes generation change from 3rd to 4th generation JF-17 Aircraft.

mean, they were upgraded to 4th gen capabilities and that is blk 2????
 
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Till you're not successfully finished with a job, pleases consider everything as difficult and put your best efforts...

Remember, what happened to the rabbit after taking it too easy vis-à-vis the turtle...

Hi,

A good old american saying---. " If you want to conquer the mountain---fear the slope---for that will kill you ".
 
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What does overhauling actually entail?
There are three types of maintenance:

- Organizational
- Intermediate
- Depot

Organizational is also known as 'line' or 'flightline' maintenance. It means the jet can be repaired and returned to flight status while sitting on the ramp or in a hangar. It means the jet is still 'owned' by the unit.

Intermediate is when a component from the jet is sent to the 'back shop' for further troubleshooting and repairs. Take the flight control computer (FLCC) for example. The FLCC is a 'line replaceable unit' or LRU. The FLCC is removed from the jet by flightline (Organizational) personnel and replaced with another FLCC. The jet is returned to flight status. The FLCC is sent to another group with more in-depth troubleshooting equipment to find and repair any issues. The FLCC is no longer 'owned' by the flightline squadron.

Depot is when the entire jet is sent back to the manufacturer, or an authorized contractor, and is literally taken apart down to the bare airframe. This is where your question resides.

The jet is now 'owned' by the depot facility.

The jet is defueled. Then all fuel tanks are de-paneled and forced vented.

The engine(s) is/are removed and they are sent to their own depot maintenance company or facility.

All LRUs are removed and they are sent to their own depot maintenance company or facility. LRU means everything for depot level. The canopy is an LRU. The lighting system, be it LED or any form, are consumable LRUs. The ejection seat is removed and sent to Life Support. Fuel pumps and quantity probes are removed. LRU = Everything.

All panel fasteners are removed and discarded.

All wiring harnesses are removed and sent to their own back shop for reconditioning. Or even for discard if necessary.

The airframe is stripped of paint.

Non-destructive inspection (NDI) begins. Borescopes, X-ray, ultrasonic, etc...

Upgrades -- if authorized -- are prepped.

Repaint and re-assembly of everything that was removed. This includes all authorized upgrades.

Functional check flight (FCF).

Transfer to originating unit who usually send its pilot(s) to fly the jet home. The squadron have its own acceptance inspection protocols. If there are no issues, the squadron resume 'ownership' of the jet.
 
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There are three types of maintenance:

- Organizational
- Intermediate
- Depot

Organizational is also known as 'line' or 'flightline' maintenance. It means the jet can be repaired and returned to flight status while sitting on the ramp or in a hangar. It means the jet is still 'owned' by the unit.

Intermediate is when a component from the jet is sent to the 'back shop' for further troubleshooting and repairs. Take the flight control computer (FLCC) for example. The FLCC is a 'line replaceable unit' or LRU. The FLCC is removed from the jet by flightline (Organizational) personnel and replaced with another FLCC. The jet is returned to flight status. The FLCC is sent to another group with more in-depth troubleshooting equipment to find and repair any issues. The FLCC is no longer 'owned' by the flightline squadron.

Depot is when the entire jet is sent back to the manufacturer, or an authorized contractor, and is literally taken apart down to the bare airframe. This is where your question resides.

The jet is now 'owned' by the depot facility.

The jet is defueled. Then all fuel tanks are de-paneled and forced vented.

The engine(s) is/are removed and they are sent to their own depot maintenance company or facility.

All LRUs are removed and they are sent to their own depot maintenance company or facility. LRU means everything for depot level. The canopy is an LRU. The lighting system, be it LED or any form, are consumable LRUs. The ejection seat is removed and sent to Life Support. Fuel pumps and quantity probes are removed. LRU = Everything.

All panel fasteners are removed and discarded.

All wiring harnesses are removed and sent to their own back shop for reconditioning. Or even for discard if necessary.

The airframe is stripped of paint.

Non-destructive inspection (NDI) begins. Borescopes, X-ray, ultrasonic, etc...

Upgrades -- if authorized -- are prepped.

Repaint and re-assembly of everything that was removed. This includes all authorized upgrades.

Functional check flight (FCF).

Transfer to originating unit who usually send its pilot(s) to fly the jet home. The squadron have its own acceptance inspection protocols. If there are no issues, the squadron resume 'ownership' of the jet.

Thank you for the insightful post. So overhaul means depot level maintenance?
 
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Overhauling could mean anything ITS TO VAGUE

To me a overhaul happens after two plus decades of use and we upgrade the engines , change the radars . ew suites and introduce a new enhanced combat capability like adding a new HMD hobs missles or a new nightfighting capability or even a new long range strike weapon.


so the question remains ……………….WHAT HAVE YOU overhauled ??????
 
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U mean lick of paint and four new spark plugs and a change of oil
Or

New aesa radar
Engine
Weapons ew suites
Hms and hobs

Overhaul is a maintenance activity not upgrade program. All aircrafts go through overhaul after a specific number of flight hours. So basically... lick of paint and four new spark plugs and a change of oil in motor vehicle terms...
 
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"Overhaul" means a process that ensures the aeronautical article is in complete conformity with the applicable service tolerances specified in the type certificate holder's, or equipment manufacturer's instructions for continued airworthiness, or in the data which is approved or accepted by the Authority.

No person may describe an article as being overhauled unless it has been at least disassembled, cleaned, inspected, repaired as necessary, reassembled and tested in accordance with the above-specified data.
 
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