May 19, 1918
U.S. Army Major Harold M. Clark Jr. and Sergeant Robert P. Gay make the first inter-island flight in Hawaii, flying from Fort Kamehameha on Oahu to the island of Maui. From there they fly to the main island of Hawaii, where they crash on the slopes of Mauna Kea. Uninjured, they will wander for a week before finding help.
http://aviation.hawaii.gov/
Air War:
0625 Two RAF Sopwith Camel pilots share a victory over an Aviatik two-seater:
Charles Gray CAtto, United States, B6412, victory number 1.
Norman Jones, England, B6372, victory number 2.
0645 English RAF pilot Rupert Norman Gould Atkinson, in DH.9 B7657 with Lt E.A. Shaw as observer, shoots down a Fokker Dr.I and a Pfalz D.III for victories 1 and 2.
0715 English RAF ace Percy Wilson, in Sopwith Camel B6363 over the Italian Front, shoots down an Albatros D.V for victory number 9. This is Wilson's last aerial victory. He will leave the RAF in September 1919, return in April 1921 and retire again due to ill health in October 1922. His life beyond that is unknown.
0820 German ace Karl Bolle, in a Fokker Dr.I, shoots down DH.9 C6159 for victory number 11. Lt B.F. Dunford and 2nd Lt F.F. Collins are both killed.
0950 French pilot Jean Brugère, in a SPAD XIII, shoots down a German "Scout" for victory number 1.
1000 French ace René Fonck, in a SPAD XIII, shoots down a German two-seater for victory number 44.
1010 German ace Robert von Greim, flying with Jasta 34, shoots down a Bristol F.2b for victory number 14.
1015 German pilot Max Kahlow, with Jasta 34, shoots down a Bristol F.2b for victory number 5.
1025 English ace pilot Douglas Cooke and observer Stanley Masding, in Bristol F.2b C4749, shoot down a Pfalz D.III. Victory number 12 for Cooke; number 4 for Masding.
1030 Douglas Cooke and Stanley Masding score their second victory of the day, another Pfalz D.III. Victory number 13 for Cooke; number 5 for Masding. This is also the last aerial victory for both men. Both will survive the war. Nothing else seems to be known of Cooke's life other than that he lived until 1955. I can find nothing about Masding at all.
1030 German ace Otto Köhnnecke, in an Albatros D.V, shoots down a Bristol F.2b for victory number 18.
1035 English RAF pilot David Weston and observer Ernest Deighton, in Bristol F.2b C4763, are credited with shooting down two Pfalz D.IIIs. Victories 5 and 6 for Weston; 4 and 5 for Deighton.
1040 American RAF pilot August Iaccaci and English observer Arthur Newland, in Bristol F.2b C859, shoot down a Pfalz D.III. Victory number i for Iaccaci; number 2 for Newland. Arthur Iaccaci is the younger brother of Paul Iaccaci, who scored his first victory the previous day.
1040 German ace Fritz Pütter, with Jasta 68, shoots down SE.5a C6449 for victory number 23. 1st Lt E.M. Hammer (USAS) is killed.
1040 David Weston and Ernest Deighton score their third kill of the day, another Pfalz D.III. Victory number 7 for Weston; number 5 for Deighton.
(Time uncertain) German pilot Otto Kirschbaum and observer Kurt Scheibe, in a Rumpler two-seater, shoot down an attacking Nieuport 28. French/American 16-victory ace Gervais Raoul Lufbery is killed when he jumps from his burning airplane.
1100 French pilot André Dupré, with Spa 68, shoots down a Rumpler two seater. Gefr Otto Kirschbaum and Ltn Kurt Scheibe of Reihenbildzug 3 are taken prisoneer.
1110 German ace Paul Billik, in an Albatros D.Va, shoots down Sopwith Dolphin C4017 for victory number 17. Maj A.D. Carter is taken prisoner.
1130 German ace Werner Steinhäuser, in a Fokker Dr.I, shoots down Bristol F.2b D1002 for victory number 6. Lt F.D. Nevin and Sgt H. Barfoot are both killed.
1135 American pilot Douglas Campbell, in a Nieuport 28, shoots down a Rumpler two-seater for victory number 3. This is probably Ltns Wilhelm Bayer and Ludwig Kämmerer of FlAbt 108, both killed.
1200 Thre RAF DH.4 crews share a victory over an Albatros D.V:
George Darvill, England, victory number 2, and Lt E. Collins, nationality and victory number unknown.
2nd Lts A. Green and F. Lolly, nationalities and victory numbers unknown.
Albert Waller, Ireland, victory number 8, and 2nd Lt Ayres, first name, nationality and victory number unknown.
1220 Two French and one American SPAD XIII pilots, with Spa 3, share a victory over a German two-seater:
Maurice Chevannes, victory number 1.
Jean Denneulin, victory number 1.
Edwin Parsons, victory number 4.
(This is possibly Rffz Walter Graaf and Sgt Christian Hofele, unit unknown.)
1330 German naval pilot Karl Engelfried, with SeeFrontStaffel 2, shoots down DH.9 D2784 for victory number 1. Lt N.A. Taylerson and 2nd Lt C.L. Bray are killed.
1545 Austrian pilot Friedrich Lang, in Phönix D.I A115, shoots down a Macchi M.5 flying-boat fighter for victory number 3.
1625 English RAF pilot John MacKereth, in Sopwith Camel B7351, destroys a German observation balloon for victory number 1.
1735 Two RAF Sopwith Camel pilots share a victory over an Albatros D.V:
William Edrington Gray, Scotland, B6239, victory number 1.
John Pinder, England, C65, victory number 7.
1830 German ace Karl Schattauer, with Jasta 16, destroys a Belgian observation balloon for victory number 9. This is Schattauer's last aerial victory. On May 27 he will recieve a wound that will keep him out of the rest of the war. Further information is unknown.
1830 German pilot Eduard Binge, with Jasta 16, is credited with the destruction of a Belgian observation balloon and the downing of an SE.5a for victories 1 and 2.
1840 German ace Karl Menckhoff, in an Albatros D.V, shoots down a SPAD for victory number 26.
1845 French ace Albert Deullin, in a SPAD XIII, shoots down an Albatros D.V for victory number 20. This is Deullin's last aerial victory. He will survive the war but die in a flying accident in May 1923.
1940 German ace Franz Hemer, flying with Jasta 6, shoots down a SPAD for victory number 10.
1940 Canadian RAF observer Leonare Arthur Christian, riding in DH.0 C6240 with Capt G.L. Stevens as pilot, shoots down an Albatros D.V for victory number 1.
2000 German pilot Erich von Wedel, in a Fokker Dr.I, shoots down a SPAD for victory number 3.
2010 German pilot Willi Gabriel, in a Fokker Dr.I, shoots down DH.9 C6181 for victory number 2. Lt C.G. Capel and AM1 J. Knight are both wounded but make it home.
2010 German ace Werner Steinhäuser, flying a Fokker Dr.I, shoots down a DH.9 for victory number 7.
2025 German pilot Franz Bacher, with Jasta 3, shoots down a DH.9 for victory number 1.
2030 German ace Paul Strähle, with Jastq 57, shoots down DH.9 C6161 for victory number 10. Lt H. Mitchell and A/G C.F. Costen are taken prisoner.
2030 German pilot Otto Wieprich, with Jasta 57, shoots down an SE.5a for victory number 3.
2326 South African RAF ace Quintin Brand, in Sopwith Camel D6423, shoots down a Gotha G.IV for victory number 8.
French pilot Arthur Marie Marcel Coadou, flying with Spa 88, shoots down an "Enemy Aircraft" for victory number 1.
Two French SPAD XIII pilots share a victory over a German "Scout":
Henri Arnault, victory number 2.
André Barcat, victory number 4.
German ace Robert Heibert, with Jasta 46, shoots down Sopwith Camel D6433 for victory number 9. Lt F.J. Brotheridge is killed.
Two French SPAD XIII pilots from different units share a victory over a Rumpler two-seater:
Pierre Claret de Fleurieu, Spa 95, victory number 3.
Pierre Marinovitch, Spa 94, victory number 7.
German pilot Amandus Rostock, with Jasta 77, shoots down a Sopwith Camel for victory number 1.
Austrian pilot Karl Urban, flying Phönix D.I 228.19, shoots down an Italian-flown Hanriot HD.1 for victory number 5.