CASE I-II-III recovery

[vctpil]

Hi,

 

Maybe a stupid question, but I can find the answer.

 

What are the CASE I, II and III ? What are the differences ?

 

Thanks,

Vincent

[umkhunto]

CASE I - Day, good weather and visibility

CASE II - Day, reduced visibility

CASE III - Night and/or poor visibility/sea state

[Victory205]

Case I is Day VFR pattern, usually done with minimal coms. Pilots hawk the deck and fly into the break and visual downwind.

 

Case II is a hybrid, where jets marshall (basically, a Navy style holding stack), then push inbound one minute apart, descend below the cloud deck and enter the VFR pattern described above.

 

Case III is marshal to a penetration and ILS/PAR straight in landing. Done at night or in low ceilings. Jets are given a time hack, holding radial and altitude, then push one minute apart. More complex that I have described, but that's the gist.

[Dispatch]

Hack Time

 

How would you set the Hack time, in a F-18?

This is the next step in recovery

 

 

99, stand-by for time Hack,

99, 5, 4, 3, 2, 1 mark, time 15

[Dispatch]

Not sure if it is implemented;

 

 

on the HSI, TIMEUFC

on the UFC, ET, 1500 (enter at MARK)

ET time will be displayed lower right in HSI

 

Is this correct?, just my best guess...

[Dispatch]

No, that wasn't it

 

ET can't be set, just starts from 00:00 to 59:59 then resets to 00:00

start / stop

 

Oh well

[Gaspipe]

Hi,

 

Maybe a stupid question, but I can find the answer.

 

What are the CASE I, II and III ? What are the differences ?

 

Thanks,

Vincent

 

For those interested (NAVAIR 00-80T-105 CV NATOPS):

 

4.12.3.1 Case I Departure.

 

This departure may be utilized when it is anticipated that flights will not encounter instrument conditions during departures and rendezvous with weather conditions no lower than 3,000 feet and 5-nm visibility.

 

4.12.3.1.1 Jet/Turboprop Aircraft.

 

After a clearing turn, proceed straight ahead paralleling the BRC at 500 feet until 7 nm. Aircraft are then cleared to climb unrestricted in visual conditions.

 

 

 

4.12.3.3 Case II Departure.

 

For departure, visual conditions at the ship may exist down to a ceiling of 1,000 feet and visibility of 5 miles. Launch shall be on departure control frequency.

 

4.12.3.3.1 Jet Aircraft.

 

After a clearing turn, proceed straight ahead at 500 feet paralleling the BRC. At 7 nm, turn to intercept the 10-nm arc, maintaining visual conditions until established on the departure radial. The 500-foot restriction is lifted after 7 nm if the climb can be continued in visual conditions. Jets shall maintain 300 knots until VMC on top.

 

 

 

4.12.3.4 Case III Departure.

 

This departure shall be used whenever existing weather at the ship is below Case II departure minimums and during all night operations except as modified by the OTC or commanding officer. Case III departures are compatible only with Case III recoveries. The launch shall be on departure control frequency. A minimum launch interval of 30 seconds shall be used between aircraft. When possible, a 60-second interval will be provided when launching a jet aircraft following a turboprop.

 

4.12.3.4.1 Jet Aircraft.

 

Climb straight ahead accelerating at 300 knots crossing 5 nm at 1,500 feet or above. At 7 nm, execute turn to fly the 10-nm arc until intercepting the departure radial.

 

 

 

4.12.3.5 Case II/III Rendezvous.

 

Case II/III aircraft shall rendezvous between 20 and 50 miles from the carrier on the left side of the departure radial at a NAVAIR 00-80T-105 ORIGINAL 4-20 WARNING prebriefed altitude (for example, 1,000 feet above the cloud layer). This does not preclude other visual rendezvous procedures as directed by air wing doctrine.

[Romiox]

thank's

[Razor18]

On 6/8/2018 at 6:39 PM, Victory205 said:

Jets are given a time hack, holding radial and altitude, then push one minute apart. More complex that I have described, but that's the gist.

I think some are mixing up time hack (to synchronize clocks) with push time (point in time to commence, aka long CASE III descent to land on the carrier). Just to avoid de-railing the topic...

Oh, and distance to hold is also given...

Edited October 23, 2024 by Razor18

[CaliJoshua]

If you really want to read up on it this is the document to read.