I posted to the old thread that it was well known at the time the IPT denied any knowledge of HISL when an investigation was launched into the Board’s statement that the installation was unfit for purpose.
This Parliamentary answer was also posted;
Mr. Bob Ainsworth [holding answer 26 March 2008]: High Intensity Strobe Lighting (HISL) was progressively fitted to all Marks of the UK MOD Sea King fleet between 1983 and 2001:
Mark 3—Rear Light introduced in 1983; Forward Light introduced in 1985.
Mark 3a—1996 (fitted when the aircraft was introduced to service).
Mark 2—1997 (all Mark 2 aircraft have subsequently been converted to the Mark 7 standard).
Mark 4—2001
Mark 5—1998
Mark 6—1998
Mark 7—2000
Could someone explain the MoD system which permits seven marks of Seaking to be fitted with a system since 1983, yet the IPT can claim ignorance 21 years later? Is this related to the Gray and Nimrod reports which both emphasize the MoD airworthiness system is in disarray?