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The Age Of The Majority Of The Usaf C-17?  
User currently offline747400sp From United States of America, joined Aug 2003, 3301 posts, RR: 2
Posted (3 years 1 month 2 weeks 4 days ago) and read 6491 times:

I know the first C-17s inter service with the USAF in 1993, but I also know the USAF recently took delivery of C-17s in the late 2000's, and when I was visiting Los Angeles earlier this year, I drove by Boeing Long Beach plant, and saw some brand new C-17s, which look like they was built for the USAF, getting near too their finishing touches. I am a fan of the C-17 because it is powered by four 757 engines, so wonder how old are most of the C-17s in the USAF fleet, also why do C-17s have such a old school Becon?

10 replies: All unread, jump to last
 
User currently offlineGalaxy5007 From United States of America, joined Sep 2005, 614 posts, RR: 0
Reply 1, posted (3 years 1 month 2 weeks 3 days 22 hours ago) and read 6459 times:

Most of them are have been delivered in the 2000s. The first 57 jets were delivered to the USAF between 92 and 99 (although they didn't begin operational service until 93). Since then 151 have been delivered The most recent delivery was 09-9208 to Charleston on February 25th 2011. 14 more aircraft are on order for the USAF, while 6 are on order for the UAE, and as stated in another thread, a potential is there for the RAAF and RAF to purchase one more each, and India has a preliminary agreement to aquire 10 C-17s with the option to procure 6 more. So, to answer your question, the average age is about 7.5 to 8 years old based on the entire fleet.

Can't answer your beacon question...but I know originally they had a strobe, and it was only within the last 5 years that they went to the one thats on there now.


User currently offlineKC135TopBoom From United States of America, joined Jan 2005, 12061 posts, RR: 52
Reply 2, posted (3 years 1 month 2 weeks 3 days 12 hours ago) and read 6321 times:

Quoting 747400sp (Thread starter):
also why do C-17s have such a old school Becon?
Quoting Galaxy5007 (Reply 1):
Can't answer your beacon question...but I know originally they had a strobe, and it was only within the last 5 years that they went to the one thats on there now.

Are they now being equipped with the old stye red rotating beacons? Why are they not being equipped with the newer LED anti-collision lights, like the A-380 and B-787? What about the navigation lights, are they LEDs or incansitant lights (light bulbs)?


User currently offlineGalaxy5007 From United States of America, joined Sep 2005, 614 posts, RR: 0
Reply 3, posted (3 years 1 month 2 weeks 3 days 4 hours ago) and read 6166 times:

They are the older style rotating beacons, but the lights are LED. The navigation lights, that I'm aware of, are still regular incandecent bulbs unless they were upgraded in Block 20.

User currently offlineJohnM From United States of America, joined Feb 2001, 337 posts, RR: 0
Reply 4, posted (3 years 1 month 2 weeks 3 days 1 hour ago) and read 6124 times:

The newer aircraft do indeed have LED anti collision lights, they do not rotate, only flash. Very bright, even in strong sunlight. It is a very large light assembly, lots of LEDs and very easy to pick out a C-17 at night, even many miles away. All the aircraft of Dover vintage and newer have them.

User currently offlineGalaxy5007 From United States of America, joined Sep 2005, 614 posts, RR: 0
Reply 5, posted (3 years 1 month 2 weeks 2 days 22 hours ago) and read 6093 times:

They must flash so slowly it appears that they rotate....I always thought they did. Thanks for clearing that up. What did you mean vintage and newer? The C-5s still have the old strobe lights on them....including the C-5Ms.

User currently offlineJohnM From United States of America, joined Feb 2001, 337 posts, RR: 0
Reply 6, posted (3 years 1 month 2 weeks 2 days 12 hours ago) and read 6018 times:

Sorry about that balls 007. What I meant was the block of C-17s that Dover has received (new build) and newer have this type of LED light. I am no 17 expert at all, don't know when this light was first installed, but the "old school" aircraft don't have them. Yes, you are 100% correct, the C-5 doesn't have this high end stuff.

User currently offlineGalaxy5007 From United States of America, joined Sep 2005, 614 posts, RR: 0
Reply 7, posted (3 years 1 month 2 weeks 2 days 3 hours ago) and read 5944 times:

Rog. Yeah, I did some research; the new lights started with Block 18; 06-6154 was the first jet. All of the C-17s are slowly being upgraded to Block 18 as the go through GRIP. In addition to the new LED lighting, Infared lighting is being installed.

User currently offlineevil8er2006 From United States of America, joined Sep 2010, 13 posts, RR: 0
Reply 8, posted (3 years 1 month 2 weeks 1 day 19 hours ago) and read 5879 times:

The new LED light mod is called Combat Lighting (CMBT LTG in the Dash 1 and checklist). Sorry to be nitpicky, but it actually started with the Block 17 mod. Basically what it does is it gives the aircrew more lighting options. The old light setup had a very limited internal and external IR light setup. Some external lights, like the IR strip lights and AR lead-in lights, were IR compatible; lights like the unmodified landing lights, anti-collision lights, AR floodlight, etc., were not. For example, if you wanted to fly blacked-out but land and takeoff using NVGs, the maintenance crews had to add IR lenses to the retractable wingtip landing lights to the unmodified jets so you could see the runway. Later on, if you didn't need IR capability on the wingtip lights, you were out of luck; Maintenance was not going to spend the time, effort, and eventually the parts on taking the covers on and off. The CMBT LTG mod added not only an additional retractable IR light to each wing (so you had one retractable IR light and one retractable overt light on each wingtip) but it also added IR lighting to the nose and taxiway turnoff light setup. Sure, we had the retractable overt nose lights for regular ops on the unmodified jets, but the CMBT LTG setup was really nice. You could land on NVGs using all IR lights at one airfield, takeoff and then go back to your home base and land using all of your overt lights, all at the flip of a cockpit switch (mentioned below). It is especially nice to have overt wingtip lights pointing down at the ground to give you an idea of where your wingtips are, a great technique for taxiing in tight, obstacle-infested ramps at night. The IR lighting in the cargo compartment was also vastly improved, adding, among other things, green IR lights to light fixtures along the sidewalls and in the lavatory. This allows much better IR capability and flexibility for NVG ops. I was never a loadmaster, so I don't know all that the mod did for them. Finally, a new switching panel in the cockpit allowed you to vary the light scheme. You could chose between all covert (IR) lighting, a mix of overt and covert lighting, or the normal overt lighting. You could also vary the flashing setup on the IR wingtip strobe lights, too. All in all, the CMBT LTG mod was great. The LED beacons were a classy-looking touch. And yes, you can easily recognize a modified C-17 from miles away.

User currently offlineGalaxy5007 From United States of America, joined Sep 2005, 614 posts, RR: 0
Reply 9, posted (3 years 1 month 2 weeks 1 day 13 hours ago) and read 5838 times:

I had to look into it...The IFR lighting started being installed on 05-5153 on forward; you can see the IFR window at the nose, which is why the nose numbers were moved. 5153 was actually a block 18 aircraft; it was reserialed from being an 06 model according to the boeing C-17 handbook. 5152, which is the last Block 17 aircraft did not have the CMBT LTG set-up (thanks for the proper name)... http://www.airliners.net/photo/USA--...oeing-C-17A-Globemaster/1539473/L/
5153, you can see the nose numbers moved up and the IFR light window installed where the numbers would have gone... http://www.airliners.net/photo/USA--...oeing-C-17A-Globemaster/1088715/L/
Several of the older jets that have gone through GRIP have been upgraded with this. Here is 96-0008; note the nose numbers were moved after it was upgraded to the Block 18 standard. http://www.airliners.net/photo/USA--...oeing-C-17A-Globemaster/0818960/L/
http://www.airliners.net/photo/USA--...oeing-C-17A-Globemaster/1661780/L/
I can also attest that 97-0044 was upgraded to the Block 17 standard, and does not have the IFR lighting yet. It was upgraded as such late last year prior to its delivery to Wright-Patterson. Perhaps the LED ACL is separate from the IFR lighting? Or is that part of the whole CMBT LTG?


User currently offlineevil8er2006 From United States of America, joined Sep 2010, 13 posts, RR: 0
Reply 10, posted (3 years 1 month 1 week 6 days 23 hours ago) and read 5622 times:

You're right, CMBT LTG may not be a modification completely inclusive to Block 17 aircraft. However, IIRC every Block 17 aircraft I flew had the mod. It may have been done early in the Block 17 run and a select few aircraft left the assembly line without it. However, once the mod was implemented and subsequent jets were built/went into Depot to be brought up to Block 17 specs, it was added then. I'm sure with the new conversion to Block 18, every non-modified jet will get the same treatment. On a similar note, the LED external lighting is probably just a simple conversion. I've seen a civilian stretch C-130 with it. I remember being at Altus for airdrop school and saw a jet with a "hybrid" setup. It had an LED fuselage lower beacon and a regular red strobe on the tail. Or vice versa. Anyways, that jet was very...distinctive.

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