If Spiers did not see the report, who made the decision not show it to him? Did ACAS see it? Group? The pilots? Haddon-Cave? Is this evidence before Lord Philip?
In turn;
Spiers - Of the 3 staff immediately below him (DGA, DHP, AD/HP1), at least two knew of the general problems, evidenced by AD/HP1's memos referred to by the House of Lords inquiry; as did ALL those below AD/HP1. Whether or not they knew of this specific report is another matter.
Group - Almost certainly. I think the distribution list would make this clear, if anyone has it. (Not that any serving officer will admit this, because withholding it carries a prison sentence! Something Air Cdre Baber will attest to).
Pilots - Almost certainly not, because they asked for a Mk1.
Haddon-Cave - Don't know about this specific report, but he was supplied with sufficient complementary evidence. (Not difficult, because the systemic failings - as opposed to isolated failings - were well known follwoing AMSO's June 1987 policy which, ultimately, led to airworthiness funding being slashed and the system being deliberately run down). This report was probably just one of many. I know of those, and have copies, from January 1988, August 1989, June 1993, June 1996, March 1998, January 2000, June 2005....... This makes his suggestion that the problems only commenced in 1998 utterly laughable. As ever, ask who this protects.
Lord Philip - Yes.