LVZXV
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Posts: 1729
Joined: Thu Mar 04, 2004 10:03 am

BAC 1-11 Vs. F28: Question About The Spey...

Sat Sep 11, 2004 5:15 am

A question regarding noise regulations:

If the BAC 1-11 and Fokker F28 are not only of the same era but also powered by virtually the same engines, the Rolls Royce Spey, how is it that there are less than five passenger-configured 1-11s still flying in the world (and all but one ROMBAC-built) against almost 100 F28s? Surely, the noise regulations would apply equally to both aircraft, or is the F28 substantially quieter than its British counterpart?


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ZXV

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northstardc4m
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Joined: Fri Apr 28, 2000 11:23 am

RE: BAC 1-11 Vs. F28: Question About The Spey...

Sat Sep 11, 2004 11:22 am

As i recall it has something to do with the F.28 being light enough to fall under the lower size limit that governs airliner noise levels.

Also the F.28 uses the Spey 555-15 "Spey Junior" vs the BAC 1-11s Spey 512 family, very possible they have a lower noise signature.
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