TYPE	LOCATION
Aermacchi MB.326 & MB.339	Behind rear pilot's seat on LH side
Aerospatiale AS.332/AS.532 Cougar/Super Puma	Behind the LH pilot seat
Aerospatiale AS.350/AS.550 Ecureuil/Squirrel/A Star	Rear decking, behind RH pilot's seat. Some have this on the RH side of the cabin, towards the tail boom (US registered examples only?)
Aerospatiale AS.355/AS.555 Twin Squirrel/Fennec	On cockpit floor near LH door. Some have this on the RH side of the cabin, towards the tail boom (US registered examples only?)
Aerospatiale SA.313, SE.3130 & SA.316 Alouette III	LH side on frame under the engine
Aerospatiale SA.330 Puma	On inside of 'broom cupboard' door, behind pilot's seats
Aerospatiale SA.342 Gazelle	Base of central console, LH side (cockpit)
Aerospatiale SE.210 Caravelle	On left bulkhead of rear stair entry
Agusta A.109/AB.204 & AB.206	LH side, on the console (cockpit)
Agusta AB.47	On plate on LH cockpit floor
Agusta AB.212	LH door frame
Agusta AB.412	RH side on the console (cockpit)
Airbus A.300/A.310	RH front passenger door frame (above your head!)
Airbus A.320	RH front passenger door frame, on the frame lip (above your head!)
Airbus A.330	LH front passenger door frame, on the frame lip (above your head!)
Airbus A.340	LH front passenger door frame, on the frame lip (above your head!)
Antonov An-2	On fuselage under LH tailplane and on a plate under the pilot's window.
Antonov An-8	Normally on the tail
Antonov An-12	Normally on RH side of tail but also on nose
Antonov An-24/An-26	Normally stencilled under LH horizontal stabilizer, in nosewheel bay & in LH undercarriage bay
Antonov An-30/An-32	Normally stencilled under LH horizontal stabilizer
Antonov An-28/An-38	Normally on inside of both vertical stabilizers
Antonov An-72/An-74	Rear cargo ramp (only visible when ramp is lowered)
ATR 42	Forward frame of the access to the rear pressure bulkhead
BAC Jet Provost/Strikemaster	On the cockpit rear bulkhead on the RH side at about head rest height; also in the nose undercarriage bay on the rear bulkhead.
BAe 146/Avro RJ	Bulkhead on entrance to flight deck, LH side
Beech 18 (Pre-war)  & D18	On the rear cabin passenger door frame.
Beech E18, G18 & H18	On the rear RH fuselage, under the front edge of the horizontal stabiliser.
Beech 200 Super King Air	LH rear fuselage, aft edge of entry door frame
Beech C-12	LH rear fuselage, nose undercarriage door and engine intakes
Beechcraft C-45G/H	On the centre top of the horizontal stabiliser.
Beech T-1A	LH side of fuselage
Beech AT-7, AT-11, C-45, SNB, JRB	On a bulkhead support above and behind the pilots head.
Beech T-34C	RH side of fuselage, under the tail
Beech Musketeer	LH rear fuselage, below tailplane
Bell 47	Instrument panel console, LH side
Bell 206	RH side of centre console, radio bay in nose; some have the plate on the RH side of the cabin, towards the tail boom
Bell 206L LongRanger	On the RH side of the cabin, towards the tail boom (US registered examples only?)
Bell 222	RH side, just above the sponson (US registered examples only?)
Bell 407	On the RH side of the cabin, towards the tail boom (US registered examples only?)
Bell 412	On the RH side of the cabin, towards the tail boom
Bell 427	On the RH side of the cabin, towards the tail boom (US registered examples only?)
Bell 430	RH side, just above the sponson (US registered examples only?)
Bell AH-1	On back seat instrument panel, LH side
Bell OH-58	LH cockpit footwell
Bell UH-1/205	Cockpit footwell - LH side or RH side?? On later models on a plate at top RH side of cockpit.
Blackburn Buccaneer (fuselage number)	When the nose is folded and when viewed from the front in this state, the fuselage number can be found on a plate on the exposed fuselage frame on the left hand side.
Boeing 707	Front LH passenger door frame or aft edge of LH door frame or near rear LH passenger door
Boeing 717	Front LH passenger door frame (LH side, at eye level)
Boeing 727	On LH side of aft passenger door frame
Boeing 737/747/757	LH front passenger door frame (above your head!)
Boeing 767	Front LH entry door, above your head as you enter
Boeing H-46	High on RH bulkhead on cockpit entry
Boeing H-47	Cockpit footwell, LH side
Boeing AH-64	Under RH console, rear cockpit
Boeing MD.11	LH front passenger door frame (above your head!)
Boeing T-45	Behind instructor's seat
Boeing-Stearman PT-13, PT-17	In the aft cockpit on the port side of the instrument panel (but many have been moved elsewhere over the years.)
Britten-Norman Islander	In the pilot's door frame, at the top inside (on fuselage).  Some US or former US registered a/c have another plate on the rear of the fuselage under the port stabiliser.
Bucker Jungmann & Jungmeister	Two plates: One on tail near the landing gear and the second at the bottom of the engine firewall.
Canadair CL.215	On the left hand side of the fuselage near the entry door, just aft of the cockpit.
CASA 101	Behind rear seat
CASA 212	LH side of cockpit on entry or painted on tail
CASA CN.235	RH side of cockpit on entry or painted on tail
CASA CN.235 (IPTN built)	LH side of cockpit doorway
Cessna 150	On firewall
Cessna 172/182	On LH fuselage rear
Cessna 208	LH rear fuselage, below tailplane
Cessna 310	Nose undercarriage wheel bay & LH rear fuselage, below tailplane
Cessna A-37/T-37	Behind ejection seats. Only visible when the canopy is open.
Cessna UC-35	Aft LH side of fuselage, under engine
Cessna singles (other than above)	LH door frame, forward edge, between the hinges
Cyclone Ax3/2000 Microlights	On the centre pole at the rear end, just before the fin joint.
Cyclone Quantum/Quasar Microlights	On the centre pole within the pod - in marker pen.
Cyclone/Pegasus XL Microlights	On the centre pole, within the pod at the bottom - etched.
Dassault Mirage 2000	In main undercarriage bay (lefthand side).
DH.82 Tiger Moth	Early Tigers [DH built] had a c/n plate screwed/rivetted on the cockpit panel. Morris built Tigers have a brass plate rivetted on the bottom longeron on the starboard side near the pilot's feet - the MCO/DH number equates to the c/n if you add 81923!
DH.114 Heron	On cockpit bulkhead just behind co-pilot's head.
DH Vampire	Next to the battery box inside the nose of the pod.
DHC-1 Chipmunk	Manufacturer's number painted in white on the inside of the luggage locker door behind the rear seat. [Fuselage number plate on the bulkhead at the back of the rear cockpit near the pilot's left shoulder.]
DHC-4A Caribou	Aft paratroop door frame
Dornier Do.27	On the LH side of the fuselage between the cockpit and cabin doors.
Douglas DC-3	High on RH side bulkhead on cockpit entry
Douglas DC-6/DC-7	At bottom sill of right-hand forward (galley) door
Douglas DC-.8	On cockpit door
EH Industries EH-101	Canadian aircraft: At head height, on the starboard bulkhead as you walk between the cargo compartment and the cockpit.
Embraer AMX	Under the LH tailplane
Embraer Bandeirante	Under the LH tailplane
Embraer Brasilia	Under the LH tailplane
Embraer ERJ-145	Under the LH tailplane
Embraer Tucano	Under the LH tailplane
Enstrom F.28/280/480	RH side on tail boom right by tail rotor (US registered examples only?)
Eurocopter EC.120/EC.130/EC.135	Some have this on the RH side of the cabin, towards the tail boom (US registered examples only?)
Eurocopter AS.332/AS.532 Cougar/Super Puma	On a bulkhead behind the LH pilot seat.
Eurocopter Tiger	LH side of the nose, visible through window by pilot's feet.
Evektor Microlights	Often at the rear of the cockpit, visible through the rear glazing but sometimes under or on the fuselage.
Fairchild C-82 & C-119 Flying Boxcar	Inside the cabin, on the rear of the flight deck bulkhead
Fairchild C-123 Provider	On the aft side of the bulkhead at the front of the cargo bay (can be seen whilst climbing the ladder into the cockpit)
FFA AS.202 Bravo	On the right-hand side of the engine bulkhead (and can only be viewed with the cowlings open).
Fiat G-91	Under the cockpit on the LH side of the fuselage
Fokker 50 & 60	RH side of cockpit doorway (at shoulder height)
Fokker 70/100	On bulkhead behind captain's seat
Fokker F-27	Inside LH cockpit doorway
Grumman C-2A Greyhound	In LH side of cockpit
Grumman E-2 Hawkeye	On the rear frame of the pilot's side window
Grumman F-14 Tomcat	RH side of front cockpit, just below canopy frame
Grumman Mallard	On left rear fuselage beneath tailplane
Grumman S-2 Tracker	On LH cockpit bulkhead, above pilot's shoulder
Grumman HU-16 Albatross	On LH cockpit bulkhead
Harbin Y-12	Plate on LH side under the tailplane
Handley-Page Herald	Plate on RH side of LH pilot's seat, at about head height as you enter the cockpit
Hawker Hunter	Port side lip of nose wheel door & port main wheel well against the lower fuselage side (fuselage c/n)
HP Herald	LH side of cockpit doorway
Hughes OH-6	Below the LH pilot seat, near the pedals.
Ilyushin Il-38	Rear wall of nose gear bay
Ilyushin Il-76	On ceiling, rear cargo hold pressure bulkhead (readable with cargo doors open)
Jabiru	(Avtech built models) Attached to the fuselage between the top and bottom LH door hinges. (Only visible when the LH door is open.)
Kaman SH-2 Seasprite	Cockpit bulkhead, LH side, adjacent to crew member's left arm
Kaman SH-2G(A) Seasprite	On a lower fuselage frame, viewed through the L/H 'chin' window, looking forward
Kamov Ka-26	Normally on door rail on LH side

Let L-29 Delfin	In main wheel well (LH side) and on LH side of tail - only the last four digits
Let L-39 Albatros	On air intakes and a plate on starboard frame of fixed canopy portion at front of rear cockpit
Let L-410	Inside of RH main doorway.
Let Z-37 Cmelak	On right side of the aircraft near the cabin door.
Lim (all models)	Often on tail, in undercarriage bay and on top of the fuselage behind the cockpit
Lockheed C-130 (except C-130J)	Plate forward of navigator's station on flight deck
Lockheed C-130J	On the side of a cockpit fitting, visible ahead of you as you walk up the steps to the cockpit. (At shoulder height on the righthand side if sitting at the rear of the cockpit.)
Lockheed F-104 Starfighter	Usually behind seat on console
Lockheed P-3 Orion	Behind LH seat on RH side of  instrument panel, above circuit breaker panel
Lockheed S-3 Viking	On bar above LH seat
Lockheed T-33	Rear cockpit, RH side, just under canopy rail
Mainair Microlights	Starboard side, etched in the frame at rear of engine mount. Sailwing c/n seen by looking directly up the centre wing pole and at the apex of the sailwing (on the inside).
Max Holste MH.1521 Borussard	In the cockpit near the right wing attachment.
MBB Bo.105	Outside on fuselage (right hand), behind cockpit ,  next to the passenger door.
MBB BK.117	RH side of the centre console
McD A-4 Skyhawk	Cockpit rear bulkhead, on RH side
McDD (Boeing) DC-9/DC-10/MD-11	Inside and forward of the forward RH passenger door
McDD F-4 Phantom II	On RH side in front cockpit, adjacent to pilot's knee
McDD F/A-18 Hornet	On LH side under canopy glass, behind seat
McDD MD.500	On LH side on the console (cockpit)
MDH MD.500/MD.520/MD.600	RH side of the cabin, low down. (US registered examples only?)
MDH MD.900	RH side just aft of door and mid-way up the height of the door. (US registered examples only?)
Medway Microlights	On the centre pole - in marker pen.
MiG-15/MiG-17	On nosehweel door and in main landing gear bay
MiG-19	In main landing gear bay
MiG-21	In nosewheel bay (left forward bulkhead), in main landing gear bay and on panels elsewhere
MiG-25/MiG-31	In the nose and main landing gear bays
MiG-27	On both sides of the landing gear (last five numbers only)
MiG-29	In main landing gear bay (RH side)
Mil Mi-2	Often painted on both sides of tail boom and on RH side cockpit panel
Mil Mi-6	On LH side of tail boom
Mil Mi-8	On one of the rafters as you head towards the tail. Partial c/n sometimes found on rear of small oval plate on LH side of fuselage aft of the windows
Mil Mi-24	RH stub wing end and inside the door.
Mil Mi-26	On rear side of all four cabin doors
Mitsubishi Mu-2	On the side of the fuselage, beneath the LH tailplane.
NA T-6 Harvard/Texan	Front cockpit, RH side
NH Industries NH.90	LH side of the nose, visible through window by pilot's feet.
Northrop F-5	Behind ejection seat on cockpit floor on LH side
Percival Provost	Above pilot's seat
Pilatus PC-6	Engine firewall bulkhead, LH side
Piper Super Cub	Main plate is often on the rear parcel shelf but the frame number - which is different but can be converted to the c/n is stamped on the top cross tube in the cockpit - visible from the port side.  This is for early PA-18s only.  Later ones have the frame number stamped on a tube by the pilot's feet.
Piper PA-34 Seneca	On the LH rear fuselage under the tailplane
Piper PA-38 Tomahawk	On the LH rear fuselage under the tailplane
Piper PA-44 Seminole	On the LH rear fusealge approx 1m from the tailplane
PZL Wilga	Stencilled on numerous fuselage panels.
Rans S.6 Coyote	Early examples have the Rans No etched on the rear of the facia, but often these areas are covered over later.  Later examples have a plate on the left-hand side of the cabin floor,but again often get covered up by matting etc.
Reims-Cessna F.406	Under the LH tailplane
Republic F-84G Thunderstreak	In right main undercarriage bay, plus dataplate in the cockpit on the port side near the pilot's shoulder.
Robin R2100A	Under the RH tailplane
Robinson R-22/R-44	Located vertically on LH side towards front of LH seat or below the right door, on the lower part of the pod.
Rockwell Commander 112/114	LH side rear fuselage just below the tailplane.
Rockwell T-2C Buckeye	Rear cockpit, LH side, rear panel
Rockwell Twin Commander (500 and 690A)	Located roughly at eye-level, port fuselage, under the tailplane.
RTAF4 Chantra	The plate (in Thai) is on the bulkhead at the back of the cockpit.
SAAB 105OE	Beneath the horizontal tailplane, on the tail.
Scottish Aviation Twin Pioneer	On the side of the bulkhead on the left hand side as you walk into the cockpit from the cabin, at about elbow/shoulder height.
Short Sandringham/Sunderland	On plate on bulkhead by LH crew door
Sikorsky S-61/S-65/S-70	RH side of centre console, between the pilots
Sikorsky S-64 SkyCrane	RH side of centre console in cockpit or on the rear of the cabin
Sikorsky S-64F SkyCrane (Erickson mods)	RH side, beside the crew entry door
Sikorsky S-76	RH side, just forward of the stabilizer.
Sikorsky SH-60 Seahawk	Centre console sidewall, LH side, under seat (except 165112 - see UH-60!)
Sikorsky UH-60 Black hawk	Sliding door frame, RH side/ centre console sidewall, RH side
Sikorsky H-53	RH side on console (cockpit)
Skyfox CA-22	On the engine firewall.
Slingsby T-67	LH fuselage, just behind the cockpit
Sukhoi Su-17/Su-20/Su-22	In nosewheel bay and on pylons
Sukhoi Su-24	On pilot's seat (last five digits only)
Sukhoi Su-25	Last five digits sometimes on wingtip air brakes or on extendable foot rest
Sukhoi Su-26	Left hand side fuselage behind side window, a brass or steel plate mounted on one of the tubes.
Sukhoi Su-27	Front bulkhead of nosehweel bay or painted under rear of canopy (must be open to read)
Sukhoi Su-28	On door of stairs
Sukhoi Su-29	Left hand side fuselage behind side window, a brass or steel plate mounted on one of the tubes.
Sukhoi Su-30	In main & nosewheel bays
Sukhoi Su-31	Left hand side fuselage behind side window, a brass or steel plate mounted on one of the tubes.
Sukhoi Su-33/Su-35	Painted above main wheel bays and on plate in nosewheel bay
Tecnam Microlights	On the engine firewall.
Thruster T600 Microlights	On the centre pole, immediately above the door on the port side.
Tupolev Tu-16	On tail and often on nose
Tupolev Tu-22/Tu-95/Tu-142	In the nosewheel bay
Tupolev Tu-134	On front bulkhead in nosehweel bay
Tupolev Tu-154	On every panel in the cargo bay and on plate on all main undercarriage doors
Ulbi Wild Thing	In the cockpit on the righthand side above the windshield.
Valmet L-70/L-90	Between the two back seats
Westland Lynx	On door frame by LH seat
Westland WB.47 Sioux	Rear firewall, LH side (line number)
Yakovlev Yak-11	On a plate on the firewall in the engine bay
Yakovlev Yak-18/Yak-40	Usually painted on tail
Yakovlev Yak-50	Inside engine bay (visible only when panels are removed).
Yakovlev Yak-52	Lower plate, LH rear fuselage, behind the base of the rudder
YakovlevYak-42/Yak-142	Painted on tail before centre engine exhaust
Zenair CH600/700	Some have a plate on the starboard side under/just forward of the tailplane.