pretty planes

It does have a sticky side to it and comes on a roll, but it is NOT thin, it is a lot thicker than tape but not too thick as to not being able to bend it.

The sticky side is a very strong adhesive so it does not come off very easily and has been tested for it's durability when used in the airstream.

It is approved for all sorts of repairs on planes but it is a temporary repair, NOT a permanent repair.

It is used more often than most people realize, otherwise a lot of flights would have to be canceled for minor issues.

Not every city that an airline flies into has maintenance there nor do they have all the parts that they need to fix everything on the plane.

Every aircraft that is used in commercial aviation uses a MEL (minimum equipment list) list which clarifies what can or cannot be broken and the aircraft can still fly or if it has to be fixed before it can fly.

If this MEL list didn't exist probably more than 50% of all commercial flights wouldn't operate on any given day.

Since I don't know the story behind the pic, it could have been something as small as a crack that needed to be fixed or there were a certain number of screws that were missing. Without knowing the details, it is hard to know the exact reason why the speed tape was used. However, it made no difference in the airworthiness of the airplane or engine nacelle. This was just the cover over the engine and NOT the engine itself.
The first time I flew in the jump seat of a Flying Tigers stretch DC8, I noticed a lot of gauges in front of the flight engineer. I asked him why some of the gauges had little stickers with DMI on them. He explained that they were Deferred Maintenance Items and did not need to be replaced immediately because there were other gauges on the panel that performed the same function and those gauges were working. I wondered what would happen if the functioning gauges became disabled during the flight I was on. But I figured that the odds of all three of the crew members not caring if they lived or died on the same flight were pretty long, so I sat back and enjoyed the flight.
 
The first time I flew in the jump seat of a Flying Tigers stretch DC8, .......

I had 3 kayaks shipped from Berea, KY to ANC for under $120 total back in the '80's. Tigers was a great freight line.
 
The first time I flew in the jump seat of a Flying Tigers stretch DC8, I noticed a lot of gauges in front of the flight engineer. I asked him why some of the gauges had little stickers with DMI on them. He explained that they were Deferred Maintenance Items and did not need to be replaced immediately because there were other gauges on the panel that performed the same function and those gauges were working. I wondered what would happen if the functioning gauges became disabled during the flight I was on. But I figured that the odds of all three of the crew members not caring if they lived or died on the same flight were pretty long, so I sat back and enjoyed the flight.

Yes, DMI, haven't heard that in a while. Usually we just say deferred.

It all depends on what it is and what it is used for, where you're flying to and what the wx conditions are. On most airliners there are 3 systems. 2 standard and 1 backup.

So if 1 is not working you can still go with the other 2 depending on the circumstances. And those circumstances can change from flight to flight.
 
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