The Gripen engine change procedure famously beat the hour during the Indian Air Force trials for the MMRCA. A recent requirement in Sicily for an engine change for a Swedish Air Force JAS 39 demonstrated how the aircraft manages to clock in a changeover time of a couple of hours even in the most complex of situations and the ribbing among engineers that happens when it takes a little more. For an aircraft that commits itself to availability, the Sicily episode was yet another confirmation of the commitment.
Here are some excerpts from the action on the ground from the Swedish Air Force from a write up by Johan Brolin (Google translate has been used for translating the story)."Thursday, July 14 technicians said that an engine change on one of the JAS planes in Sicily had to be implemented. On Friday night at 20:15, the new engine arrived in a C-130 Hercules. Activity began immediately after the engine arrived in order to have the plane with the replacement engine in operation at the earliest. It's incredibly impressive to see, and one can almost feel the energy that exists among the staff around the plane during the engine change.
When the job was finished at midnight and it was found that the work took about three hours, ie little longer than normal, the staff jokingly agreed that it was partly due to the boss who had taken part!
After an engine change, a trial run of the engine is done to check that everything is as it should. Back in Sweden, the testing is done in special places that are prepared for just this purpose. These include devices for anchoring of the plane that allows it to be tested at full power. In Sicily it is a bit different. We must go to a special plate where there is a huge heavy wire fastened to the ground as we switch on our equipment on. From the time the engine was ordered until it was replaced and tested, it took about 36 hours. Good job."
Here are some excerpts from the action on the ground from the Swedish Air Force from a write up by Johan Brolin (Google translate has been used for translating the story)."Thursday, July 14 technicians said that an engine change on one of the JAS planes in Sicily had to be implemented. On Friday night at 20:15, the new engine arrived in a C-130 Hercules. Activity began immediately after the engine arrived in order to have the plane with the replacement engine in operation at the earliest. It's incredibly impressive to see, and one can almost feel the energy that exists among the staff around the plane during the engine change.
When the job was finished at midnight and it was found that the work took about three hours, ie little longer than normal, the staff jokingly agreed that it was partly due to the boss who had taken part!
After an engine change, a trial run of the engine is done to check that everything is as it should. Back in Sweden, the testing is done in special places that are prepared for just this purpose. These include devices for anchoring of the plane that allows it to be tested at full power. In Sicily it is a bit different. We must go to a special plate where there is a huge heavy wire fastened to the ground as we switch on our equipment on. From the time the engine was ordered until it was replaced and tested, it took about 36 hours. Good job."
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