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PH-CGB

Old 9th Apr 2020, 19:45
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PH-CGB

I had to prepare the funeral of my father in law and found this beautiful picture of a school trip to Schiphol in his photo album.

I would like to detail the date a bit more.

PH-CGB Jan Scorel was registered with the KLM from 1954 till 1964.

My father in law was born 1948 and was probably still in the boys school. as there are only boys in this picture.

That would limit the photo till pre 1960.

I have read that the PH-CGB was converted from Convaie 340 to Convair 440 spec. I do not know the date of that conversion nor do i know if you can see the difference.

The painted hangar must have been quite colourful and has "737" mentioned so might also give a clue?


Last edited by Self loading bear; 9th Apr 2020 at 19:46. Reason: photo added
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Old 9th Apr 2020, 20:14
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There was a 330/340 at Belize in the late 1970s. It belonged to some Missionary organisation and had a brake fire on the runway. It had been there for some time and had seemingly been abandoned. Our groundcrew, forerunners of today's urban explorers soon found a way in discovering a fantastic super VIP layout in the cabin which showed how these evangelists expected to be treated.

Having experience of supercharged radial engines I hatched this plot of firing it up just to listen to it.

The miserable sods who ran the airport refused to let us have a go, threatening to report us to the garrison commander.

It probably stood dormant, speechless and silent until the scrappers came along.
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Old 9th Apr 2020, 20:41
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website https://www.hdekker.info/registermap/MC.htm

gives some more information.

translation:
Registered with KLM on May 30th 1954
Conversion installed in 1955 (no date)
Deregistered May 6th 1963 (next registrations known PJ-CVB, HP-485, N423AJ), The PJ-CVB registration is for the Dutch west indies.

The National Archive has an accident report for March 23rd 1956 (The name Convair 340 remained) with a Dutch Navy hawker seafury. Unfortunately because it involves a military plane the report is not public. December 13th 1956
is also mentioned. Not sure if that is a second incident or just the date of the publication date of the report.

The conversion to 340B or 440 includes a longer nose and rectangle engine exhausts instead of round ones. Diffcult to see on your photo.
see KLM Hamburg

The color scheme of the whole fleet was changed in the early 60ies. That would confirm your limitation of pre 1960.
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Old 9th Apr 2020, 21:41
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Originally Posted by Self loading bear
I have read that the PH-CGB was converted from Convair 340 to Convair 440 spec. I do not know the date of that conversion nor do i know if you can see the difference.
Strictly speaking, a Convair 340 could not be converted to a Convair 440.

That said, Convair offered a Service Bulletin (340-144) which, if and when embodied, allowed 340s to be operated at Convair 440 weights and performance limitations.

However the aircraft remained technically a 340, in fact the KLM example pictured was registered as such throughout its career, up to the point where it was cancelled from the US register in 2012 after having served with KLM West Indies and COPA Panama (though it had actually been broken up in 1975).
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Old 9th Apr 2020, 23:05
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All,

Thank you for your quick reactions.
I am now a lot wiser about conversions, long nose, short nose and cup noses.
PH-CGB was converted to CV-440-4 standard in early 1955.
This must have been only the engine (exhaust?) modification as I also see the same full metal short nose with pitot tubes on photos with the Jan Scorel in the later 1960 KLM livery.
so the conversion date is not decisive also because I think 1955 would have been to early as my father in law would have been 7.

The search continues.
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Old 10th Apr 2020, 03:24
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Convair CV-440 (incorrectly identified) Serial 184 Built 1954
HP-485 dd 1/69 Cia Panamena de Aviacion
PH-CGB dd 5/’54 as CV-340-48 converted to CV-440-4. canx 5/63 Jan van Scorel KLM Royal Dutch Airlines
PJ-CVB dd Aug 1964, canx 12/68 Bonaire ALM Antillean Airlines
HP-485 dd 1/69 Cia Panamena de Aviacion
N423AJ 8/19/74 American Jet Industries Registration cancelled 11/07/2012 Identified as a CV-340 on the registration

https://rzjets.net/aircraft/?page=4&typeid=263

As Dave has pointed out once a 340 always a 340, despite incorporation of mod -144. See note seven of the attached TCDS link which says,
Model 340 airplanes, S/N 2 through 311, are eligible for operation at Model 440 weights
and performance limitations as shown in the Model 440 FAA Approved Airplane Flight Manual when the modifications outlined in Convair Service Bulletin 340-144 have been incorporated
https://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/86284b968da5453386256af800675521/$FILE/6a6.pdf

Dave, do you know what is significant by the CV-440-4 designation?
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Old 10th Apr 2020, 09:57
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[QUOTE=Self loading bear;10745141]






The painted hangar must have been quite colourful and has "737" mentioned so might also give a clue?



Possibly the founding of Amsterdam ? Worth doing a bit of homework your end. Too early for significant voyages of Dutch Exploration. Marco Polo?
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Old 10th Apr 2020, 10:03
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The paintwork on the building in the background is somewhat reminiscent of the artwork for the 'Atoom' building, which was specially built for an exhibition in 1957. This same building was later repurposed for the 'Aeroplanorama' which was the predecessor to the Aviodome/Aviodrome museum. This Aeroplanorama closed in 1967. The first 737 to turn up in The Netherlands was a Transavia one in 1974, so I doubt that this is a useful link. The design of the 737 went back to 1964 with a first flight in 1967, so it might have influenced a decorative painting in the mid-1960s but not before 1960 I guess.
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Old 10th Apr 2020, 12:25
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Originally Posted by megan
, do you know what is significant by the CV-440-4 designation?
No, you'd have to ask rzjets. I don't recall ever having come across a Convairliner with a single-digit variant number.
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Old 10th Apr 2020, 13:22
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Thanks,
I found now it is indeed the Wall painting of the Atoom building designed by Hein Stolle
(architect and furniture designer)
the 737 seems to be a coincidence.
It is the top row of what appears to be an Arabic digit puzzle.
displayed in the painting.





During the Atoom exhibition there was a square with a pond in front of the building.
A visit to the AreoPlanorama would fit perfectly in the school trip.
As the AeroPlanorama opened in 1960, this would narrow it down to spring or early summer 1960 before the re-painting of the aircraft.


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Old 10th Apr 2020, 13:27
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Jhieminga. How interesting I'm sure you are right. I have found this image.


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