submission - Independent Pilots Association

zonc fì¡thcs is thc rimc requrred forrbc body to ad.¡ust to ¡hc ncr¡ tllr¡c zonc Tlepcnod of
adjustrncnrappcarsrodcpcndonttrduectionoft¡arcl AdjustmenlaPFatstobefasteraftcr
o.r,r^ard flighrs than casrward fligbu (Klcin ft t*'egrnann. l9t0). Adjustnrnr follos'ing
wcstç'a¡d flighrs appcars to occur e¡ a rate of about I -( hours pcr da;" rr hile e^st* ard-fÙght
adjustnrcnt occurs at about I hor¡r Ft
day. This ma¡' bc due lo the bod.'-'s i¡thcrcn¡ tcndency to
lcngthen is pcnod bcyond 24 hor¡¡s. which coincidcs sith wcs¡*'ard flighs. Thesc data dso
,rgg.t, rha phasc shifu bclow si¡ bor¡rs can have a signifrcant impact (Ascboff et al.. 19751.
Asidc frorg tb obvior¡s iruplicaioos for ua¡rsræridian ogcraions. tbasc'lrt'¡lso apply to rqssre
pilo(s whosc pfotÊclcd slccp oppornnity nr¡y vafy ss lo its oc¡cu¡reoc/e ælGs essignnrcnts. Evca
if I prorcctca tiræ pcriod is paaicottc, unþst it i¡clr¡dcs thc night boun, it may nor providc rn'
cfrcctive opporg¡¡fy for slæp rod tbt¡s fil¡y Dot lcsscn fatigtæ.
Conch¡sloos
The follo*iog conclusioos ca¡r bc dr¿wn from thc rcsca¡ch cited abot'e:
o A¡ i.odividr¡el's WOCL sbould bc deñDcd on thc basis of the ti¡rr zoæ *herc hc/shc
rcsides, which n¡ey bc difrcrcar from thc horr domicile'
. D,¡ry pcrids conducrcd during WOCL atready carry a fatiguc Pcnalty due to the ci¡cadia¡
cycle. Consc4uently. duty priods involving WOCL should bc reduced.
. The number of dur.v pcrids r¡r'olvin_q WOCL thu must bc pcrfonrr,j **itbout tin¡e off
sbot¡ld bc limitcd.
o Becar.sc tbc ci¡cadian cyck is longer tha¡ l{ hrrlils. each duq Pcnd should sun la¡er
rha¡r tËc prcvious duç- Pcnd.
.. Rese n c assignments should atierìrF( ¡o mainta:n a !-onsisten: l:-hou¡ ;i cle
. Dua-ooo of rotauon for bo¡.h ba.-k-oi-¡hc-cl¡-ii fì¡ing a¡J .j.¡ect¡cn r'f !r3-íìsme ndla¡¡
opcrauons should bc consrdcrcd Grren the boJi'; preferencc forcrtendins thc da,r'.
backr*ard rotatioo should b. uscd *hen possible
o Tra¡snrndran opcrations shor:ld bc scheduled ln accorda¡ce u i¡å c¡tåer of t'*o
approachcs.
. For shon pcriods, it may rnake scnsc to anemPt to kecp t}e piJot on hornc-domicile
È.rrE.
o For longer pcriods, reducing tìe dury perid and providing morc opponunities to slccp
rnay þ the bcst aPProacb
Literature Rn'i¿x
Page 2E