Originally Posted by
Icarus2001
GBO if the crew had the presence of mind to divert to Penang why did they not descend?
If the crew oxygen bottle has ruptured in the Main Equipment Center, and the P105 Left Wire Integration Panel & Left AIMS Cabinet are destroyed, the crew will be overwhelmed by failures.
The resultant failures, task complexity, mental overload and higher priorities can result in the descent being overlooked.
Originally Posted by
Icarus2001
Why did they miss a master warning for cabin altitude?
Without the valid landing altitude data, the cabin altitude warning message shows at 15,000 feet, not 10,000 feet. Without 4 DUs, the PFD, ND, MFD and EICAS information are competing for space on the remaining 2 DUs. The crew may have selected the right inboard to MFD to run checklists, thus there is no EICAS information immediately visible, it requires the crew to switch the right inboard back to EICAS. Things can be overlooked in a stressful cockpit and mildly hypoxic.
Both pilots were smokers, as stated on their last medical renewals. They are more susceptible to hypoxia.
Originally Posted by
Icarus2001
Why did they overfly Penang and turn NW?
If the crew should miss the GRADUAL decompression event, hypoxia will lead to mental confusion. Strange decisions will be made.
Originally Posted by
Icarus2001
If flight modes changed from LNAV to HDG then who did this if the crew were unconscious?
At the end of route to Banda Aceh in LNAV, the autopilot mode remains in LNAV but reverts to maintaining the last magnetic heading. No crew input is required.
Originally Posted by
Icarus2001
Why did the aircraft then turn S?
The aircraft was heading south because the autopilot was following the diversion route to Banda Aceh via VAMPI-MEKAR-NILAM-SANOB-(ANSAX)-Banda Aceh. Once it reaches Banda Aceh it is already heading south. It continues south on autopilot until fuel exhaustion. ie 34S 93E with inop left Autothrottle
Originally Posted by
Icarus2001
Finally your thoughts on this track…
It ignores the primary radar data through the Malacca Strait.
WSPR data is not accurate enough to plot a course.
The WSPR flight path is extremely complex, when compared to the simple diversion to Banda Aceh route via NILAM-SANOB.