. pesena i on of 1975 and 1977 Raoo ed 3oe i n faa l i i es pevenab l e 1 a l l Sw i ch- MARCH 1979 1. UCUCR0m The ques i on of k i l l av i chea, dead man ho l es, and e he asss of sopp i ng unway boa s vas a i sed as a Na i ona l Boa i ng Sa fey Adv i aaay Counc i l (1135=) membe i em i n ea l y 1976. i s 1975, hm'boos Guad ' s Na i se Sa fey Techno l ogy D i v i s i on of he Of f i ce of Reseach and Deve l opmen ss i aa ed ha 1 " faa l i i es on j onboa s and 99 faa l i i es am ohe ypes of bea s cou l d be pevened by such means, us i ng samp l i ng heoy and eng i nee i ng j udgmen. A soe de a i l ed and i goous l ook a h i s pob l em vas equesed by he Boa i ng Techn i ca l D i v i s i on of he Of f i ce of Boa i ng Sa fey and he equ i sed ana l ys i s vas comp l e ed by he Of f i ce ' s Po l i cy P l ann i ng and Infoma i on Ana l ys i s Saf f. Th i s pesena i on w i l l h i gh l i gh he esu l s of h i s ana l y- s i s wh i ch i s based an 1975 and 1977 faa l acc i dens epo ed o he Coas Guad. 2. ODMCTIVLs To de emi ne he magn i ude of he numbe of epo ed boa i ng faa l s i ~s~o he yeas 1975 and 1977 i nvo l v i ng unaway boa s whee he opoa o vas i ncapac i aed, fe l l o vas hown f om he boa. 3. l RMDOLOGT i A compue scan of he faa l boa i ng acc i den mase f i l e i s Coas Guad Headqua es vas pe fomed. Th i s seas was node o i nc l ude a l l faa l acc i dens i nvo l v i ng mooboa s i n he fo l l ow i ng acc i den ypes fa l l s ov-sboad, s uck by boa o pope l l e, ohe and unknown. Al so, a l l faa l acc i dens i nvo l v i ng mooboa s w i h no un i n j ued opea o i n he boa wee. a l uded and hose hav i ng he fo l l ow i ng acc i den desc i pos : - =zhana i on, l ack of sw i mmi ng ab i l i y l - Runway boa s - l os found up i gh, d i f i n= i - Sand i ng i s boa, sa i ng eng i nes and - Sa i n ea. ev he yeas 1973 and 1977 comb i ned, hee wa* a oa l of 2,224 faa l boa - i ng acc i dens epo ed o he Coas Guad. The compue scan poduced 1,213' faa l acc i dens o 322 and 572 of he oa l s fo 1975 and 1977, espec i ve l y. _ ~ These numbes i nd i ca e ha he compue scann i ng pocess vas compehens i ve *sough o i den i fy even hose acc i dens w i h l i l e de a i l. The 1,211 faa l acc i dens poduced by he scan wee hen pocessed hough he dec i s i on ee shown on page 2. i s i mpo an o noe ha he dec i s i on ee does no cons i de he sw i mmi ng ab i l i y of he faa l i y v i c i m. Of he 1,211 faa l acc i dens ha eneed he dec i s i on ee, 160 wee co l l ec ed f om he " accep " sodas. Of hese 100, h i y (30) wee c l ea l y pevenab l e by a ecen equ i p- mos deve l opmen wh i ch pevens sa i ng i s gea. The poen i a l saves e l a - ed o i l l sw i ches wee heeby educed o 150. The faa l i y v i c i ms i n hese 130 acc i dens hen had o be so ed accod i ng o sw i mmi ng ab i l i y. Dose o he i me and d i sance needed o sop a boa, on l y av i ans cou l d be.. saeeped as poen i a l saves.* he so by sw i mmi ng ab i l i y poduced 25 * - One mi gh ask i f he use of PFD* has any e f fec an hese ypes of ace i dens- The genea l l y l ow wea a e of PFD*, oge he w i h he fac ha a l l he down i s i s acceped by he dec i s i on ee d i d no i nvo l ve PFD wea, DEPOSITION Pemi s he assump i on ha?to* had l i l e o no e f fec on he f i na l acc i - ~~ ~ EX ~ ~ HIBj da s se l ec ed. vp5f 'Q1~5
i ub j : R i l l =w i ch sudy faa l i y v i c i m of unknown av i w i n ab i l i y. These wee d i s i bued i no av i eoes and non-sv i mves, by assumi ng ha ]0Z of hese v i c i m cou l d 4e. ua l l y sv i e we l l enough o " cove f om he ype of acc i den be i ng exami ned. The 30Z f i gue i s based on he comb i ned j udpea of sevea l Peop l e and goups i nvo l ved i s wa e sa fey pogams.* The f i na l Paoa of Voea i a l gam i s 95 faa l v i c i ms (SS o 1975 S "0 i s 19771. Th i s oa l i nc l udes known sv i saes and 30Z of he v i c i m of unknown sw i mmi ng ab i l i y. Th i s i s he bas i s fo genea i ng he bene f i ana l ys i s. a ' The numbe of faa l v i c i m e unknown av i mi n= enough ha a see ab i l i y vas sea l! l i bea l d i s i bn i ea of 502 of hese as sw i mmes s i gn i f i can l y a f fec does no he bene f i ana l ys i s. h i s Th i s i s sudy. i l l us a ed on page 14 of 1 0.
ACCIDENT SCREENING PROCESS 10 KILL SWITCH STUDY WAS w0" s aw l l *o 7 " U f " ACT ' M"CT FY v " v8ee i ev " "W"O i nvfe7 "o1 1811.11U"AI GOAT CAW" TOY un eee" {T"YCRw am ee " T? 1CCVT " ACT ~CC I ' wua " ma i m a " wa KIT: O.O/CK44 O" IT " YI " "VWN O oow"c" " ~e.r " IU~f { e "T ue.w. " ev " Ihe OR CY" Npf~ BYO ACCI " T " SACT
UNIX Is 1975 Repo ab l e pe a l Acc i dens Pevenab l e by a "K i l l Sw i ch" No. of dea hs Case No. Sae Type of Popu l s i on Boa Lengh Noaapona 1 01007 Al, ou 144 18 1 01068 AL Ou 149 ' 20 1 02039 A1 ou 23' so 1 04001 A l ou 17. 70 1. 04017 AR Ou 14. 20 1 04021 AR a 14. 23 1 04030 AR Ou 18' 65 1 04034 Al Ou IS' 40 1 05136 CA Ou 11' 5 1 05557 CA In/Gas 16' 165 2 05694 CA In/Gas 27. 650 1a, 13572?L Ou 14' 60 1 13383 1L Ou 16. 40 1 14026 GA Ou UNK ONK 1 14024 GA ou 12. 20 1 17026 I L Ou 16' 35 1 21058 KY ou 12' 10 1 22009 LA Ou 16' 65 1 22008 i s a 14, 10 1 22011 Ls ou 141 20 2 22203 IA -Ou 16. ISO 1 22209 IA ou 16' 85 1 22048 LA ou 16' 8S 1 22007 1A Ou 16' SO 1 22210 1. Oa 1S' 65 1 22186 L ou 161 40 1 26027 MA ou 16' 40 1 26036 MA Ou 16' 100 1 27406 M I ou 18. 85 1 27186 MI In/Ou 17' 173 1 31008 MO ou 14. 20 1 31208 Mo ' ou 170 85 1 35997 N9 Ou 18' GNK 2. 36000 l ax i l ou 160 l os 1 36160 NJ ou ISO 50 1 41011 0C w 12. 3 1 41027 1C ou 14. 20 1 41184 NC ou 18. 150 1 39223 NY Ou 14. 35 1 44996 OR Ou 14' 50 " 1 63012 PR Ou 130 15 1 43057 SC ou 15' 60 1 48095 SC ou 120 20 1 48112 8C ou 13' 20 L
. :, No. of dea h. Case l o. sae Type e Popu l s i on Boa Lsna h Bosapow 1 50035 ep ou 14' so 1 s l os5 : a 16' as 1 51065 Ts ou unk MW 1 51134 TI ou 16' 105 1 51399 i i ou 15' ' 65 1 51343 Tx ou 12. 9 1 51345 2X Ou 159 so 55053 VA ou 1b " 75 *Moe v i c i ms d i ed i n hese acc i dens bu he numbe g i ven i s on l y hose who had known sw i mmi ng ab i l i y 1 i 1 `
i -._- 1 1975 KILL SWITCH PREVENTABLE FATALITIES 3 CASES (3 faa l i i es) WHERE HORSEPOWER IS UNKNOWN J 0 1 05 Is u i s u m m a so won i on so f m os oo 150 209 OR MORE MORSEMMIER
21 20 10 i s 17 i s 1s 14 W. 13 J F, 12 11 10 W-3, n 7 6 2 1 0 12 14 1s 10 20 on YOBS LENGTH I
TABLE ZVI Ta a l i i aa by Hosepowe - Al l Boa s* Teas /hose poes l ees hen 25 25-74 75 o soe Toa l 1975 15 (292) 19 (36. 5%) 18 (34. 50 52 (100. 02) 1977 12 (32.5%) 12 (32.55) 13 (352) 37 (100.0! ) TABLZ Vs Fa a l i i es by Hosepowe " Ouboad Boa s* yea /Hosepowe l ess han 25 25-74 75 o soe Toa l 1973 13 (31. 3! ) 19 (39. 62) 14 429. 12) 48 (100. 0%) 1977 12 (37. 52) 12 (37. 5Z) 3 (25Z) 32 (100. 02) TABLE VI : Pecen of faa l i i es by hoseooe ea exo f by ea * C Tove i an Ca eo 100 o mo e ho sepowe 73 o me hosepowe 50 o mo e ho sepowe 25 o ace hosepowe 1975 1977 212 292 352 352 S5Z 572 71% 682 Exc l ud i ng boa s of unknown hosepowe f om Tab l es I and 11, L 11