russ_watters
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It would depend on the particulars of the job description, but there is, for example, a section in the security clearance requirements/screening on mental health, not to mention personal conduct:Doug Huffman said:My career was in naval nuclear power from 1969 to 1995, and I am aware of no such requirements. There was explicitly no such program for submarine qualification.
http://www.military.com/veteran-jobs/security-clearance-jobs/security-clearance-eligibility.html
Though it is difficult to isolate the specific impact of the door, the combined effects of the various security enhancements since 9/11 prevented hundreds of hijackings.How many terror incidents has a reinforced door prevented?
http://aviation-safety.net/statistics/period/stats.php?cat=H2
Just some quick stats from that:
-From 2005-2014 there were 26 hijackings, with three deaths resulting.
-From 1991-2000 there were 185 hijackings, with 156 deaths resulting. The vast majority of the deaths were from one incident.
Note, that hijackings by Islamic terrorists were "in fashion" in the mid-'70s to mid-'80s (around 30 a year), until countries started taking a hard line on negotiating with them. They were mostly in the teens before 2001.
Frankly, this is clear evidence to me that our security procedures prior to 9/11 were severely lacking and the security procedures since have been a very good thing.
I'm not aware of any other incidents like this since security was enhanced after 9/11 -- do you know of any? I hadn't heard of Pacific Southwest 171 until you posted it, but while you called it aircrew suicide, you were mistaken: it was a passenger murder/suicide. The murderer was a recently fired tickting agent, not a pilot, so the security door would have prevented it. It was in 1987. Not sure if it gets counted as a "hijacking".How many murders has a reinforced door allowed?
I'm not sure statistics on aircrew suicide even exist due to the rarity, but found this via google (2013 incident):
http://www.ibtimes.com/pilot-suicide-when-its-captain-who-crashes-plane-1519756An airplane crash that killed 33 people last month in Namibia may have been pilot suicide, an extremely rare occurrence that brings to light an infrequently studied phenomenon: the mental health of aircrew.
However, this is actually a studied phenomena and the wording of this report implies that it essentially never happens in commerical aviation:
http://ntl.bts.gov/lib/51000/51100/51188/201402.pdf[from the intro]
This paper is a 10-year review (2003-2012) of aircraft-assisted pilot suicides and is a follow up to our previous 1993-2002 review. From 2003-2012, there were 2,758 fatal aviation accidents; the NTSB determined that 8 were aircraft-assisted suicides (all involving the intentional crashing of an aircraft). This number is half of what we found in our previous 10-year review.
All pilots involved in these aircraft-assisted suicides were male, with a median age of 46 years (range 21- 68, mean 42 ± 16 years). The pilot was the sole occupant in 7 of the 8 aircraft that were intentionally crashed. Four of the 8 pilots were positive for ethanol, and 2 of the 8 were positive for Selective Serotonin Reuptake Inhibitor (SSRI) antidepressants.
Based on the limited accidents conclusively attributed to suicide, death by the intentional crashing of an aircraft is an infrequent and uncommon event and has declined compared to the previous 20 years.
[from the conclusion]
All of the suicides involved general aviation operations. Most of the suicide-pilots were experiencing significant stressors in their lives at the time of their demise. Toxicological data indicate that 50% (four of eight) of all aviation-assisted suicide-pilots involved at least one, if not more, disqualifying substances, and 38% (three of eight) had impairing levels of such substances in their system. No information provided during the medical certification process identified suicidal ideation or evidence of depression. The suicides presented here were likely precipitated by events occurring after the medical certification process had been conducted, reviewed, and completed.
The lack of a locking door probably would have prevented this, but like nsaspooksaid, the screenings failed here also. Either way, this is such a rare event that except for the "two in the cockpit" rule that already exists in the US, I'm not sure any other changes are warranted.
Nonsense. Passengers have no right to access to a cockpit, so adding a lock to the door does not decrease liberty. But it certainly enhances security.Meanwhile we have sold much liberty for a temporary security, and will achieve neither.