三藩市國際機場多問

三藩市機場有4條跑道,但呈十字型,每邊兩條,而兩條平衡的距離是很近的. 可是,本人多次見有2架飛機非常近距離同時降落,一架左邊落,一架右邊落,但左右距離很少.另外,
也有見過兩架飛機同時起飛,一架係左跑道,一架係右跑道,距離也十分近.

本人想問,如果有兩架飛機同時降落和起飛,萬一遇強大氣流影響飛機方向,會否容易做成空難? 不過,三藩市機場咁多年都運作暢順.

由於三藩市機場繁忙,但跑道是十字型,無法同時處理起飛和降落,請問控制塔如何妥善地令機場運作安全? 本人用過幾次三藩市機場,都感覺好危險.

SFO uses simultaneous close parallel ILS PRM, 2 flight approaches from the left of 28L and right of 28R, and at different height, they are only parallel to the runway when they are close to landing;

and basically flights are taxi into position and hold at 1L/R, and once the runway 28LR is cleared, the flight at 1L/R takes off

fly faa gov~Information~west~zoa~sfo~atcCharts~SFO_IAP_00375IPRM28L_C.pdf
faa.gov ~training_testing~training~prm~media~prmaim.rtf

[ 本帖最後由 hkalankc 於 2012-9-20 07:48 編輯 ]

原帖由 hkalankc 於 2012-9-20 07:43 發表
SFO uses simultaneous close parallel ILS PRM, 2 flight approaches from the left of 28L and right of 28R, and at different height, they are only parallel to the runway when they are close to landing;
...

但係降落時都有機會出現風切變,會影響架機既平衡度.倘落兩架機左右距離十分接近,仍然存在一定危險. 這一點他們如何處理呢?

basically there is a NTZ in between 2 runways, as long as one of the flight crosses the boundary, both flight will be issue a breakout instruction from ATC

2. ATC Directed Breakout: An ATC directed"breakout" is defined as a vector off the ILS or LDA approach coursein response to another aircraft penetrating the NTZ, the 2000 ft wide arealocated equidistance between the two approach courses that is monitored by thePRM monitor controllers.

Two radio procedures are specific to PRM. These relate to observed localiser course deviations and NTZ penetrations (Breakouts):DeviationsThe ILS PRM display and radar technology allows for aircraft track projections up to 10 seconds in advance of the actual aircraft position. If the PRM display indicates that an aircraft will penetrate the NTZ an advisory broadcast will be issued to the aircraft. The phraseology will be:

“(callsign), radar indicates you are deviating (left/right) of the localiser course.”

Note: Pilots are not to acknowledge this deviation advice.
BreakoutATC is required to issue instructions to break off the approach to any aircraft that enters the NTZ. Any aircraft in conflict on the approach to the adjacent runway will also be turned away. Phraseology for the Breakout will be as follows:
“Breakout alert, (callsign), turn (left/right) immediate, heading (…). Climb/descend to (altitude).”

[quote]

原帖由 hkalankc 於 2012-9-20 11:26 發表
basically there is a NTZ in between 2 runways, as long as one of the flight crosses the boundary, both flight will be issue a breakout instruction from ATC




[quote]

咁如果有呢個INSTRUCTION,就唔會有911啦,以前也唔會試過兩架機空中相撞啦.

請問911發生什麼事您清楚嗎?

原帖由 FBI2 於 2012/9/21 09:47 發表


咁如果有呢個INSTRUCTION,就唔會有911啦,以前也唔會試過兩架機空中相撞啦.

你意思係如果 911 有呢個 Instruction, 恐怖份子就會乖乖按呢個 Instruction 唔把飛機揸去撞建築物, 而會按指令以原定路線飛去原定目的地嘛?

SFO's 風切變同側風 is not very strong since it is inside the bay. However, when fog runs in , then one of the runway will be closed and expect minimum 1 hr delay

原帖由 yuenpo 於 2012-9-21 15:18 發表
SFO's 風切變同側風 is not very strong since it is inside the bay. However, when fog runs in , then one of the runway will be closed and expect minimum 1 hr delay

上次我係西雅圖落去都遲左成個鐘先落地.
但係,我未見過一個機場可以左右兩架飛機咁近距離一齊降落.

真係唔好當設計條友傻既先得ga...
香港以前啓德機場有風切變機會都唔高啦，係去咗大嶼山先咁多風切變之ma
又唔見你話當年九龍啲樓咁高，萬一有風切變咪西落啲樓度？
問野之前諗多少少先啦