&WAil DEPARTMEST,., A. 'P,. }))tm «0. U(1I",1Ii64 M,,16.1ijj2) ActlDIln No _ ..__ .. _

WAR DEPARTMENTU. S. ARMYAIR rol'tClS .y.s. 3-/9 _ s-;J_ l-

I- jI, .fJ;/ ~RT OF MRORAM' ACCIDENT ~ ~ I'.• taa~n-()!4' 4-..{l) Place _.1.AE ..s . .lOC•.._ (%) Date ..U.J!arcb 1915 _ (I) Time .J.llO ..APlCBArr: (i) Type and model _..B!:'llG.,Da.- (I) A N~ .lJl.-6S.914L~(I) lIc.ation -.lQS-.-----

Orpo.iJatioD: ('7) -atlL1· _- (S) 3f.Jh.B.I1mb.-. (I) _5L1.tJ)_~~_.,_. ~ ~ 51'(e-.-! r-> !(O_),;',;/ (~1IIIInIa) ~ ,;1--_) •.' ,.. V//

(17) C&UIe~ aocideDt ____.t:.l.ilWo...IIU:.l:IlL.--U3IiJ:lLlAIU~Ul..,liWl.. __ 'fI:1aJ48d.ll.u:e..~ ~~

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• • DlSCBlPTIOH 01 ACCIDDIr

(liM II&mUve IiaccldenL IncludillatellleDt oIl'f1JlODlilnllLY and reoommendatioDi for action to preYeDt repetlUoD)

•The airplano was landed ~atisfactorily, upon completion of an operational mission,

and was turned off the runway and taxied with the usistance of brakes which were appa.r-ent~ working sat1.efactor1ty. After Hearing the runway, the-pilot decided to usc hisinboard engines to taxi as one ot the c ltboards (#4) was feathered 80 be cut the otheroutboard (#1) ani proceeded towards his assigtl6u dis,!)er.lal ~:lnt. After ta:x:iing about1000feet, ani upon starting a left turn, the pilot noticed that he was not gett'ingresults from the br.akes - BODe contusion followed during 'll'tUchtine he applied fullpoweraltsrnately on both i"lboard engines, increasing his taxi speed, alii executed anuncontrolled left turn \Dltil the right wing struck a tree and stopped the aircraft.It has been determined by the Accidellt Boa.....athat ,thlt l\vdr&ulic syatem WaB actuall1out temporarily although the investigatioll :immediitely following the accideni dis.closedno mali'unction of the system. This failure of the system has teen asseesed 25% ofthe responsibility. ThepUot was given 75% ot the ,~sponsibility i~ '~1ng at anexcessive rate of speed, under the. cbcUDi9tances,.and for not instructing the co-pilot to use the'eargency hand pump io build up :the pressure,· : .'

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It is the opinion of thia Accident Board tha~ p~"entative action shollld 'includecloser ,suptJ'visiOn over taxiing bi 'f'zyingControl With special emphaSis on f"st' taxi..ing. : • - t ' ~.~ ..

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AIRPLANE FLIGHT D~TRANSCRIBED,TOTAL PLIGHT'

o~l:tt. TIME ENTEftlED.-~ cua.c ON "'OR,.. 1,A.

IIiPIl TOTALIIILJ '-LIGHT 9.00cacw TIMEc... "

..DAn: ,STAT'ON

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AIRCRAFT MODIIII.

CRKW'CHunr 0 .. AliJtIAL ENQINEER

sian. Saa CA' x-:t.SQUADRON No •• TYPIl AtRCftAF1" .all-'AL No.

J.. L .. ,.",._,S44t.h ...., Sa (M)_PERS_CLASS 'NAME

_RINT PLAINL.Y-ASN.-GRADE - ORGANIZATION

FLIGHT DATA

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---1--08 ·45 -t~;:. , 01. In.r., OUV.A 1.& Lt.- ~QQU.

t--J.'-~-r:::'Albert. I, 2Dd. Lt., O-'P-2'S

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A,LWAVS ENTER DUTY SYMBOLS. WHEN APPLI-C•• LIE.ENTER N-NIGHT OR' .-INsTRUMENT.ENTER TIME FLOWN THEREUNDER

US"A.DIRECTEDLOCALLY •7~ .. II • ""0".

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r~A" OrNCII1lI1I'IT AIRPL~NEFLIGHTRE~~~r-:~; ~ If·~r n. ·A. ,. "OllN NO. , A"IV. II JAN AA)

INSPECTION &TATUS ~,lIt,{'NcfAT Afrotl O""'·K[.,. II..1II,ICIoi[CIC...... 1"DI.4TrL't.''0'" TAI([·O".

PAn 0,. INlPlenD TODAY

lEOOR

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NO.•PREFLIGHfIbi 19-45 w 0- NO. I H<>.2 HO. , Il;tlot UfI"· I.~u19-45 • KEO UH.r1 .0.,· '" lOY. I~ ltAy· IH UIIV· 1M

OAILY IIIllI,~ TANKa IUD T~':I'" ICI:O T,,"'I($ IC.., f.Wkt

I., HOURi 2aJ11~ lIT ~7OC lI..I:l 110 lllt 'l./a'] -I;30C"15 2'''0 I50 HOURS1--.- 3]0,]0...'.~_H:_~ SlA.D

18),15 t---PWOO ATHI-BArl'S. 5TH

INSPECTION OF AUXILIARY EQUIPMENT JTATU~

EXPLANATION: CCIII)IIS SwiM 1'b:I!.--. TODAYIIQUIPM(hT "".OL IN.PIGTtD BY STAllON

7\ 2/ _llux GaH_ColIpaaJ ott.H HID! lD6 XBOMBARDMENT /\..ROZKI~t_GUNNERY R ,. '. -------II --

RAM JEm.KR 106COMMUNICATIONS H HUMENVCK 106 EXCEPTIONAL Ra..EASE-.

WHEN THE "STATUS TODAV" I. INDleAT£O .Y A RED 8""0C.PHCTOGRAPHIC ANO AN "EXCEPTIONAL II[1.EA6E" HAS NOT UEH O"ANT£O

BY AN AUTHOAI7EO MAINT£N~NC£ orrICER. THE PILOT 0" THiAIRCRAFT WILL 51GN THI& RELEASE BEFOR£ FLIGHT. INAVIGATION !, 1375 It B1~d. RELEASED FOR {~~IYi. PIERCE 3 I_~2_

'LIGHT

j"AIIleRA" AND ENGINE TIME RICORD

REMARKS: fl1.0TS ANO MECHANICS· In INs",veTtONI IN"O( ,.ONT coy.o. IIWTlIt IN HOURI AND M'NIJT1:I,

ChkJ. Sltill on Pm-f.l.i.I!bt.. ~ ..... IIlRR lNG1Jt1l NO. I NO. I HO. J HO ...

I114 Engine Failure. RiIbt 1fiDIz Damand . IiOU.' 2'1!) ,3C 32.00 127'i11(12~J30TO 0."£night Indicator ReIlOYed. Sgt. J CAMPBELL HOURS 9,(X 9,00TODAY

Ball rutoret Door Removed T/srt,. GREER TOTAL 281uJe 41tOO 281uJ( 28Jul' ,-OM.Ctw.or: !NGD ~ CHA_N ~--_. OUICUMO.C,LU, ... '"8,~'''.- ,,... Due

NOU'"

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A'ltc,,;.rr HOUlt' 9.00_-_ .. -TODAY

284 ..30.- ..---

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DAnAIRCRAFT OIlG. DATA AIRCRAFT DATA [HGINf DATA I.IIA.OOB 19'16 Aut ,.cltel' CONfI'ON[Mr IN"N' MODeL

I"VIII !.A.l.B. (Ii) R1Mn.91 f·,""o\TKiH J:.COMO•• nllY. co .. e. 0. D.,'TMIf',UHO. KalAL HO. L106 lat1f1nc SfJJrrL62 s.J27639CItOU,. NO. a TyftE 4UtC1U" JfOOC,L ICJtIA1. HO. IPII,U, NO.C".:." CHII[" 0111r.NGIN .. U 384 BalB. (H) B-l1G 811)1C:J,J.IIS/Sgt.SAK C. J.I5lfJ ~UADiltO" NO .• n,.c "OCAAn -;:nr;'.. ':l-~ Bam (8) J,4-65 "'1 :~RIG""-.T.r;~ ~n.- , ....... ., .... ·'W -~ ..,' f . .9.00\....; ......~..--:v. - ..

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U WAR DEPARTMENTAAF Flinn No• .w •'R (llu"'d:l-~)

TO: 8£ F1LLID II If STAnOI AllY All FOlcn •ITUIOI.caw... JUTEln.lnn, 22-3-h~

OR nAnDI

UNSATISFACiORY REPORT A.l.C.I£WII. IWDTO jW"

(.. lA'''" 15-14,.,1aI... U.."...,htlf ~ F..-) L..-- ...__--.I_ ____~U 'R:

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1M COIIPLETE'£TAlLS, PIOUII! CWO All ....... \11011 WI:(I. 1aIr ......................... ._."..,.u1lll)

1. Aircraft 8-17044-6590 laDd,d returning trOIll an operationalmission. Brakea on the run _., and for about one thoUS&Dd(1000) yardsaround the perilleter operated 0.1. but then after t&x:i.ni this diatance brake.were needed again aM pUot am co-pilot olahed DO brakes were availablewhich ca~ed the aircraft tONn into a tree.

2. It is believed tbt.t the switch au., .olenoid type 13-4 _., blfestuck IIODaentairl1causing the brake pressure to be lost. Solenoid ....found slightl1 burnt although after the accident the whole eyst_..,oheckad and found O.K. lfTdraulic pressure was eight hundred (~) po_.The brakes were worked causing the pre.sure to go down and the eydrIul1cpump cut in building the pressure up again.

J. Since no previous trouble has been encounterfld this U.R. issulDitted Ol~ to accompaey the fona 1..4 in this case. '

t//~.~~. #4t,.t?~.4.. TlfOJiISP:DiVIs, tJI_.Captain, Air Corps, '

Group EIIgr. Officer.

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STATE!IEH'r BY 1ST LT OSCARW. PIERCE, ~17 J OONCERNIN(JACCro~T OF AlIWRA.~

I 44-6~90, 19 MARCH1945'

"leaving formation due to e.Jlil.oe trouble I and after dropping rtI1 bcab.I proceeded to base without Wldue trouble, lIlen reaching French Coast, I u.edbtdriullc pressure to 'Operate _1 flap. t:r engw coolillg, At thil tim,I placed mtr.n in autautic position, The cowl naps were ~p8rated"nraltimes .n return to baee &!ldcydraullc pressure checked O.K. Arri'fing It baseI made rq landing at 17'30 hour.~ '!be cydraulic pressure at tillle ot 1andil'l8was checked and found to be no.nUl. I used brakes to alo" t11¥ {~ll and &IN toturn fretA ru!11fi1. The cowl naps were opened at this timt. After l.1ning upfor a .trdght, taxi, the tail wheel was locked and l oonnal taxi was lIl&de tofirst left turn en the taxi strip. '!be tail itheel os unUcked at this point.and u'in& ITJ¥ right eng1JleI prooeeded to make tum, Atter gettin& plane inturn, I then tried to atop or straighten it and had no pre asure tor brakes.j'lhen brakes tailed, I u.td tull lett throttle to stop turn, but by this time I01 off runway and heading for a tret. I then cut left engine and tried toground loop plane belore strlldng tree, but tbis Just increased rq speed, soboth engines were cut and the plane struck the tree with the right wing anda.t this time the hydraulic pressure pumpstarted running wbii:JI bunt thepressure up to normal. Hydraulic pressure was called out 18 O.K. Whenwe hadcompleted roll and lihUe on our initial landing tnd last roll, the el'l8i.nssroalled h1draulic pressure O.K."

.-..---~~klit Lt., Air Corps,Pilot.

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SWEIIFJI'l' BI 2nd LT. ~ N. ESm, 0-76126" COIfcmuurro ACCIDENT01 AIRCRAFT 4h~,90, 19 JWtCH 1945. '

The b1dr1ulio qstem was checked embetore lar.din& oheck and was operatingDOrmall,V. Uponlandiili the lJ1draulic -S)"Item was uaed'to open cOII'lflaps and slowd~ t1le larldini roll. !be bi'akes are 'IorldJli when the turn ott the end ot th.1'IIDWI1 ns .de. W. tu:ied to the Wm partllel w rw:IIfIY;3O'.nd while mkingthe turn it was first not.1ced that the bfdraul1c S1S1ie1lDS out. '!he turn walltried to be .de nth the eilgine6tiiacliatel1 n nnt ott the periuter and belore the, aircraft could be stopped it hit • tree causUlg damage to tilt airplane. When theairplane etopped'I could liaar thl"~c puq, operat1ng, bu1].d1.ng Up the hy-draulic presSIll'e. I do not knaIr the reason tor tbe eydrauJ.1c tailure.

tJ!Ix j,fJt:2nd Lt., ,!"!!:l,Co-Pilot.

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~ landiDa ftI a nora]. land1.ni. lQdra1ll.io pre,lUl't wu up.fbi plant "I' .land iaa _ 'tI1rIIM onto the' tIad st,rip at the 'M,ot the~ ... hW tlzieci appNxiat.el1 1,000 rardllDd attopte4to Jab a .11&ht tu:m to tbe r1cht. The:t1rat inGication I bad thatanythina III UODi was the pilot reV'fing tbI eneW' in III attaPt toDIP the plane Itlo&iiht. • mmg ott the lett 11•• ot t~ rwrRy &DIheaded 'dii'tct~ tor a tree. '!'he 14 ,.1l(1nt .s teat.beredJ .0 thepUot rtne4111n lIlattupt to aW1ni clear, 'but". hit the tree ritAour riaht winc. It &1lIlApptDH "17 ..utly, ~ I tidnft realilethat the b1'lkls ..ere out until a tn •• co_ betoN ". 'hit. Ai'llhit the tnt, the b1Vaulio PUlP IIOWr startH J"UDDJni.

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5USJI!:CT: Aircraft Accident.

'lD OOI,ll'!A;:nI!'lG OFFIOER, MF Station No. 106, AR) 557, u.e; ~.• 1. At 1725 bra., 19 M~rch1945, aircraft 6590, pilot Lt. Pierce

landed early from operation with No.4 propeller £'eaJ;hered.

2. \I'hil e t~in5 to dispersal area the pilo t call ed on R/T saYinghis brake preseure had failed and that bis aircraft had hi t a tree to the1eft of the perimeter track.

5. AIlIbulanoeand fire tender were dispatohed to the scene of accident.All concerned were notified.

:t:::-:-J- J/ ~J AI·lES H. BILLSlst Lt. A. O.I)-lty F1y1nS Control Officer.

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HE~UARn:RSAAF STATION RO. 106

Offiol of tre Int.U.ig.no. Offioer

APO • 557,~3Varoh 194,.

SUBJECT I Aj rcraft A~c1d.nt Roport of 11-170 44-6,90 of the ~tr. BombardmentSquadron, 384th Bombarcl.mentGroup (H), AAF Shtion 1!CI. 106, APe 551,19 Maroh 1945.

TO I CommandingGeneral, Headquarter., First Air Division, APO 5,7, U. s.Army.

1. The following report on the aboy•• ubjeot i. hereby .ubmittedl

FACTS, Airoraft Number44-6590 of the $44th BombardmentSquadrOl:l,384th BombirdMlnt Group (H), AAF Station 106, APO ,57, piloted by 1st Lt. Oeoar11'. ?:Ieroe, 0.669917, 544th BombardmentSquadron, 384th P'omba,.d_nt Group, AAFStation 106, APO 557, was r8turn1ng to his home .tation atter an operationalmiBoi on over enemyterri tory with hi 8 NlIDIber4 propeller feathered, this enl:inehaving tailed onr enemyt.rritory. Whenhh airorart hlv! reaohed the Frenohooaat Lt. Pieroe uaed his hfdraulic pres,ure to operate his oowl flaps to 0001his engin8s. He also pl •.oed the Prenure Regulating Switch in the automatioposition. The pressure ohecked out normally on the gauge at thjs time and a+.the time of landing his airoraf't. UtilI' making a I:!Orma.1apr'roaoh to the n81dand landing he used Ida brakes to 11011' dOlfll thft roll of hi; . ..u:oratt 8M e.~80 to turntrOD! the n:mray. A norlna! taxi was lIl8.d. to ita first left turn !)n the taxi .tripexoopt he wu taxiing on hie two inboard englnu u hi. Number 4 engine nl 1n-operati V". 1'!le tail wheel W88 unlooked .t this point and using hh right enginehe prl)oeeded to make his turn. Atter getting his plane into tl'o turn he trhdto stop E'lld straighten out hie airoratt and touId that there '[ft. no eydrluliopressure for his brake.. When Lt. Fier~e disoover.d that h. had no hydrtu110pressure for :,ie b~lro8 he used full l.tt throttle to .top his turn, but bythis time he was oft the runway, h.ading tor a trfte. 5e then out ~i8 lett engine~nd tried to ground loop hi, plane before striking the tr •• but this only inorta.edhie .peed. Both of ~is en~ue. were th.n out nnd the plane OIM. in oontaet withthe tre.. 'he right illl.1er and outer wing panels wert damaged, the tu8el~g. wu..n-lw.led and oaved in at stations Numbertive IUld lilt and the fuselage ft. wrinkledat the lett wing root. Uponstriking the tree the hydraulio prelOure pump startedto operate and it then built up the hydraulio pressure to noraal.

2nd Lt. ·Albert N. E.p8Y. 0-781265. "u the~;2i;t~6t)he airoraft. He hadoheeked the eydraul10 prolllure in the airordt i ~_l"Jt«the .. lIIe tIM' II! badLt. Pieroe and had a1l0 found it to be n01'lll.l. Whenhe beoame anre that the Pilottebrake. were Dot funotioil!ng properly, h. had applied presaure to hi. ri£ht brak.,only to find that he had no bydJ'~ulio pressure either. H. did not attempt to buildlIP the eyd~uUo __~_~~~,!"ewi_~~~!~band p:!!.~!. p~t."~ ........- ......,",-<"",.",,~,_,,,:-.-_

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s/Sgt. Charlel E. Taylor, 6987119; the En(ln'6t of the airoratt, hadch.olted the hydraulio pressure in the air and While i;~ Ul'cJ'lft ft8 taxiingand had found it normal. While the tirorsft WI. at the miSSiOD be hed drainedthe system aooording to Standerd Operational Prooedure and lat!'r had .tell thatthe pres sur. had been built up when it beoome neo.e.ary to use .ame. S/sgt.Taylor .dd that while he lIU installing his gunll in the airOl'att that mornlnghe had bumped against the instrUllllntpanel IlDd the h~riulio pressure puap hadstarted to operate and did 60 for a ~hort time. He had thoutht at the tim! thatthi8 wae unusual, but a. it out ita.lf oft in a .hort time he did not give thematter another tho~ght after noting that the presaure ~. up to normal. He el.onotiaed that after the aircraft had hit the tree the hydraulic PUlp had againcui; in and built the hydral1lio p1eesu" up to n01"lU1.

FINDING, It 1. the opinion of thie offioer that the tL~ acoident of19 Jlarch 1945 involVing airoratt Number 44..6S90 piloted by let Lt. O.car 'If.PIerce, 0-669917, ....11 due to the faUure of the hydraulio ayateD! ot hi. aircrattand ~~f~;~Y ~~ the rai lure of the Pru8ure Rttulat~ Swi tob to operatepro 81' ~ rurr;a~"'1~waVa~e""'{o'i"iibOt1i.;~ana-ttf~".~ti~;.o~ Lt. Albert N. B~pey, 0-781265, the Co-pilot ot Airoraft KUmber 44-6590,to tully realize the immediate .ituatioll and to operate the hand pressure pumpto build the hydraulio pressur. up to a point tor the proper operation ot thehydraulio system. AD Unsati.taotory Report ie being rendered by Major Jaoo1alHane.n, 0-2044535, Station S-4 Offioer, of tbis station on the Pressure RegulatlDlSwitoh ot Airoraft iumber 44..6590.

hn~.~let Lt., Air Corp.,Intelli!enoe Offioer Kamber.

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RES-rRI~TED '

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