Redningsvester

[Caffe]

Hei

Finnes det noen historiske eksempel på nødlanding på vann hvor redningsvester har vært i bruk og det har vært overlevende?

Hvis ikke. Hvorfor har vi da redningsvester ombord på fly?

[EB]

Godt spørsmål!!! Det finnes i allefall flere eksempler på at fly av sklidd av rullebanen og blitt stående i vann og da har kanskje redningsvestene en misjon?

[raskefot]

Det var jo den DC-8maskinen til SAS som ditchet utenfor Los Angeles. Liferafts ble iallfall brukt, men om noen rakk å ta på seg redningsvester vet jeg ikke. Noen som husker?

[dc-8-63]

Her er litt mere informasjon om SK933: (fra Airdisaster.com/forums)

The following DC-8 mishap offers several lessons for survival after a water-landing: Water rushed in, Flooring broke, belts were difficult to release (2-hands), Rafts were difficult to inflate, Rafts were punctured.

NTSB AAR 70-14 SAS (SK933) / 13Jan69 DC8-62, LN-MOO (Norwegian registry) 6 miles west of LAX, at 1921p.s.t., DC-8 impacted water surface of Santa Monica Bay, 15 killed: ref Sys Malf and crew division of responsibility.

F/O as PF, planned VOR-approach 7R at LAX [though ATC cleared via Loc BC 7R], NIGHT rain & cloud. The mishap Captain described the night as black and featureless, with no ground reference, crew saw no ground lights during approach (AAR pg 6); a crew-distraction induced by NLG Indicator inop, the Captain described the water-impact as tail-down (AAR pg 20) and not too hard, similar to landing in a flying boat (AAR pg 9); .

Investigators debate over Fail-safe standard for LG indication display.

“The accident occurred in the waters of Santa Monica Bay ... attempting an instrument approach to Runway 7R at [LAX] . . . unplanned descent into water ...”

Sob = 45: drowned = 3pax + 1 F/A; missing = 9pax+ 2 F/A; injured = 11pax + 6 crew; uninjured= 13pax.

Upon sea-impact fuselage broke into three sections, with one 85-foot length section of Wings and fwd fuselage aft to Wing’s T.E. (Seat-Row 16 forward) FLOATING for about 20 hours.

Impact discussed, 6-crew survivors and 18-pax survivors were in the forward section, 6-survivors were in aft cabin section (aft cabin-section sank after impact-fractures),

= = excerpts = =
from AAR pg 21:

“... Passenger survivors reported only one impact which they likened to a very hard landing. The impact was followed by rapid deceleration that was described by one passenger as being similar to thrusting a shovel into sand. Quantities of water were forced up through the floor of the cabin of the aircraft, and the center aisle between Rows 2 and 11 was disrupted to the extent that portions were missing completely, leaving openings down to the baggage compartment. This condition made evacuation difficult.”

“The surviving crewmembers . . . evacuated passengers from the cabin onto wings and into liferafts to await rescue. Survivors estimated that the time from impact until rescue was 45-minutes to 1-hour.”

“After two rafts had been loaded with survivors, the rafts were tied together and were paddled away from the left wing, passing in front of the nose of the aircraft. The second life-raft in tandem was blown back against the jagged metal at the nose of the aircraft where it was punctured. This raft collapsed with ‘startling speed’, spilling people back into the water.”

“When other survivors attempted to launch another life-raft from the forward edge of the right wing near the No. 3 Engine Pylon, this life-raft was also punctured by jagged metal and collapsed with an ‘unexpected suddenness.’”

More excerpts from AAR pg 22:

“The emergency cabin lights operated, although they did not remain lighted very long....

A suggestion ... liferaft covers should have a ball handle and/or luminous paint to facilitate finding the lanyard for the inflation ... In the darkness out on the wing ... liferaft had to be turned over several times to find the cover release pull string....

Flashlights ... should be located beside each exit....

Some ... survivors stated ... standard seatbelts had extra long free ends, and this delayed ... release.... caused ... to interpret ... problem ... during a moment of panic ... requiring both hands to release the belt.”

[OJB]

Det er flere eksempler på ditchinger der redningvester har vært av avgjørende betydning for overlevelse. De berømte Stratocruiserne var jo kjent for motorproblemer med påfølgende ditchinger. Northwest hadde en maskin som ditched i Puget Sound nord for Seattle der alle klarte seg bortsett fra 2-3pax som druknet.
En DC9-33 fra Overseas National, N953F, fløy tom for fuel nede i Caribien 2 mai 1970 og måtte ditche i dårlig vær. 40 mennesker ble reddet fra vannet etter en time av helikopter. 22 druknet.
Ellers har jo mange kjerrer ditches i dette området, men stort sett har dette vært fraktmaskiner av gode gamle årganger.

[ANX]

Loven krever at når man skal fly "within gliding distance" fra shore, så skal redningsvester være med/og på!

Hvilket betyr at når man flyr over Oslofjorden med uansett apparat, så skal da alle ha flytevester på!

:

[OMW]

Hei ANX,
jeg regner med at du mener outside gliding distance from shore?

Bortsett fra det, så må nok ikke vestene være på, men bare ombord.. Iallefall i de lover jeg kjenner

mvh,
OMW