When I joined our 747 fleet in the mid-seventies, our big birds used water injection. F/E's nursed. .Pratt&Wittney engines with demineralized water.
We had to use that on airports like NBO (high and hot) with MAX TOW. Had 4 green "water flow lights" above other engine instruments, if I remember correctly. They had to light green until 80 knots. If one failed= takeoff aborted. After having past 80 kts, continue. Only problem was, 3 pair of eyes watched fascinated those funny lights, bit irritating. No grey-haired F/E there around, who can assist me?. .BAC 1-11 used also water, if lucky. Once, a german charter BAC (Panavia?) tried a forced landing on the Autobahn (expressway) right after T.O. in HAM. A ground mechanic in Ham had mixed up 2 containers, one filled with demineralized water, the other with some kind of fuel. That's what I ment with "if lucky". Engines overheated, burnt, failed and the crashlanding on the Autobahn ended under a bridge. Some pax and crew survived. . .By the way:RH seat occupied by a lady-pilot, who killed herself and other passengers some years later on an executive jet during VFR-approach in IMC condition east of HAM. We call it destiny? <img src="frown.gif" border="0">
[ 09 February 2002: Message edited by: Captain104 ]</p>