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Trident Water injection

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Trident Water injection

Old 3rd Apr 2018, 13:51
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Originally Posted by SOPS
Sorry for the thread drift...but a question, what was the range difference between a 720B and a 707 ( of any type)?
I believe the difference was actually in the tankage, to get a reduced MTOW; the engines were the same, these stepped forward from turbojets to fan jets on both types. The 720 had a lighter internal structure and landing gear because of the lighter weights. The 720B, with the engines off the 707-320B but lighter weights, was regarded as a real Pocket Rocket.

Aer Lingus used 720s (non-fan) on Shannon to New York, and sometimes could not make it and had to drop into Gander.

Because of the lightweight structure and reduced MTOW the 720 was never suitable for conversion to a freighter.
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Old 3rd Apr 2018, 17:14
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re range i am puzzled how channel airways (CW) did STN - Las Palmas in 3hr 15 mins - apparently a record still held today

they used the Trident one E-140's with 139Y pax config
no idea of pax load the day of the record flight

Northeast (NO) had same type of a/c with 123Y and I think they struggled with LHR to Malaga on a hot day

My travel company chartered NO Tridents for several years for a large programme of summer and winter ski series charters from LHR (Swans Tours Oxford St)

the furthest we went from LHR was to Malaga but I flew from LGW to Dubrovnik on one subbing for a BCAL 1-11 in Aug 1972 - full load seemed to manage it OK

anyon concur?
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Old 3rd Apr 2018, 17:54
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Originally Posted by rog747
re range i am puzzled how Channel Airways (CW) did STN - Las Palmas in 3hr 15 mins - apparently a record still held today?
Channel never got any mainstream IT series from the UK with their Tridents, and just picked up oddball individual flights and subcharters. So quite possibly it was an empty positioning flight for a return load.

The only major series from the UK they ever landed for jets was with Lyons Holidays, and that was the contract the old Olympic Airways Comet 4B fleet was bought for. They got a major contract for one Trident out of West Berlin for a couple of the Trident's years with them, but while this was in progress the second Trident spent one whole summer season AOG at Stansted being robbed for parts to support it due to some issue with their Hawker Siddeley account.


Did the 1E-140 have water injection ?
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Old 4th Apr 2018, 06:03
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BEA Operated an ex Channel Airways Trident 1E YE out of Glasgow for 17 Months 1972 to 1973.
I know YE did not have Water Injection.
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Old 4th Apr 2018, 08:27
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Originally Posted by WHBM
Channel never got any mainstream IT series from the UK with their Tridents, and just picked up oddball individual flights and subcharters. So quite possibly it was an empty positioning flight for a return load.

The only major series from the UK they ever landed for jets was with Lyons Holidays, and that was the contract the old Olympic Airways Comet 4B fleet was bought for. They got a major contract for one Trident out of West Berlin for a couple of the Trident's years with them, but while this was in progress the second Trident spent one whole summer season AOG at Stansted being robbed for parts to support it due to some issue with their Hawker Siddeley account.


Did the 1E-140 have water injection ?
well CW had their own Mediterranean Holidays brand which offered Canary islands so maybe it was one of their flights?
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Old 4th Apr 2018, 08:57
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Canary Islands on a Trident from ... Southend ! Now that would have been an interesting takeoff.

Did Channel actually check pax in at Southend and then coach them over to Stansted ? Did once hear this.
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Old 4th Apr 2018, 10:54
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Originally Posted by WHBM
Canary Islands on a Trident from ... Southend ! Now that would have been an interesting takeoff.

Did Channel actually check pax in at Southend and then coach them over to Stansted ? Did once hear this.
No, i dont think so,

channel had planned their 1-11 and trident IT jet ops from the start to go from SEN BUT very quickly the level of local noise complaints saw them having to move most of their jet ops PDQ to STN
maybe they did some coaching to STN for the SEN already booked pax?

ad hoc jet ops were also from LTN and MME to PMI with a trident at weekends
BUA leased one of the new 1-11's for all of the summer 1969

yes in 1971 they got a Berlin IT contract to see a 1-11 (or 2) and one Trident based there with the other trident used for spares backup
the comets doing most of the UK IT work - yes Lyons and Leroy tours were customers
1972 they were gone for good
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Old 8th Apr 2018, 14:47
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Originally Posted by WHBM
I believe the difference was actually in the tankage, to get a reduced MTOW; the engines were the same, these stepped forward from turbojets to fan jets on both types. The 720 had a lighter internal structure and landing gear because of the lighter weights. The 720B, with the engines off the 707-320B but lighter weights, was regarded as a real Pocket Rocket.

Aer Lingus used 720s (non-fan) on Shannon to New York, and sometimes could not make it and had to drop into Gander.

Because of the lightweight structure and reduced MTOW the 720 was never suitable for conversion to a freighter.


The 720B had 17000# thrust JT3D engines where as the 707-320B/C had 18000# engines. Still a rocket ship.
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