The 747 that lost all its engines didn't see anything either.
Actually, Travis, the transcript of the cockpit communication of KLM 867 says differently.
Here is the transcript of the pertinent conversation between the KLM pilot and Anchorage Center;
"PILOT KLM B-747 – “KLM 867 HEAVY IS REACHING {FLIGHT} LEVEL 250 HEADING 140”
ANCHORAGE CENTER - “OKAY, DO YOU HAVE GOOD SIGHT ON THE ASH PLUME AT THIS TIME?”
PILOT KLM B-747 – “YEA, IT’S JUST CLOUDY IT COULD BE ASHES. IT’S JUST A LITTLE BROWNER THAN THE NORMAL CLOUD.”
PILOT KLM B-747 – “WE HAVE TO GO LEFT NOW… IT’S SMOKY IN THE COCKPIT AT THE MOMENT SIR.”
ANCHORAGE CENTER – “KLM 867 HEAVY, ROGER, LEFT AT YOUR DISCRETION.”
PILOT KLM B-747 – “CLIMBING TO {FLIGHT} LEVEL 390, WE’RE IN A BLACK CLOUD, HEADING 130.”
PILOT KLM B-747 – “KLM 867 WE HAVE FLAME OUT ALL ENGINES AND WE ARE DESCENDING NOW!”
ANCHORAGE CENTER – “KLM 867 HEAVY ANCHORAGE?”
PILOT KLM B747 – “KLM 867 HEAVY WE ARE DESCENDING NOW … WE ARE IN A FALL!”
PILOT KLM B-747 – “KLM 867 WE NEED ALL THE ASSISTANCE YOU HAVE SIR. GIVE US RADAR VECTORS PLEASE!”
1
So, it seems KLM 867 had severe volcanic ash cloud issues after all.
This is a quote from CAPTAIN TERRY MCVENES, EXECUTIVE AIR SAFETY CHAIRMAN, AIR LINE PILOTS ASSOCIATION, INTERNATIONAL, before the
COMMITTEE ON COMMERCE, SCIENCE, AND TRANSPORTATION SUBCOMMITTEE ON DISASTER PREVENTION AND PREDICTION,
U.S. SENATE, MARCH 16, 2006;
"Commercial turbojet aircraft are certified with multiple redundant systems to prevent total system failures. Yet even they can be rendered helpless by volcanic ash. Therefore, detection, prediction and dissemination strategies are essential to avoid the hazard. Either we will identify a turning point in our understanding of the volcanic hazards and the impacts on aviation, or we will continue on our present course and accept the hazards of the encounters that we have reviewed. Continuing on our present course may produce fatal results."
2
1.
http://www.alpa.org/portals/alpa/pressroom/testimony/2006/TM_3-16-06.htm
2. ibid