Kimon, I think U need to see more 737 Classic cockpits...
When the -300 came out, the early ones came with steamgauge engine instruments...
The later ones, mainly came with the LED
engine instruments... just like the -400 and -500... going steamgauge or LED
engine instruments remain a customer option (since the -400 came out, the default is the LED
The 737 Classics until they stopped production, only had the LED
or steamgauge engine instruments as an option... Any CRT or LCD
engine instruments are retrofits (I know some are being offered out there but I dunno if anyone's taken them up).
Some steamgauge engine instrument cockpits were later changed to LEDs. Haven't heard of a move from LED
to steamgauge though.
As for ADI and HSI, you have the 737CL EFIS and non-EFIS... the EFIS ones have the CRTs, and non-EFIS look like the 737-200 cockpit (but with the Classic Mode Control Panel like the EFIS... not the jurassic gas cooker dials from the 50s). Most of the non-EFIS Classics are the -300s... there are very few -400s that are non-EFIS (I've only been told of one over here... dunno about other countries).
As far as I know, the EFIS on the Classics are still CRT... no LCDs yet I've seen on a.net photos
|Quoting kimon (Thread starter):|
How was the 734 flight instrumentation modified after the Kegworth crash?
I have to go with Tom on this one. I was in the UK during that time and there was a big fuss over the layout of the instruments, not just the LED
vs steamgauge. But it was a training issue... the 737-200 and classics engine instrumentation are laid out from left to right as:
Left Engine Primary Instruments, Right Engine Primary Instruments, Left Engine Secondary Instruments, Right Engine Secondary Instruments.
There were suggestions to change it to:
Left Engine Secondary Instruments, Left Engine Primary Instruments, Right Engine Primary Instruments, Right Engine Secondary Instruments.
The latter came from the Fokker 28 (and am sure there are others with such layouts too)... the 737s and DC9s have the former. The argument was that under the 737/DC9 standard engine instrument layout, on the LEDs, you're open for misidentification of which engine... one argument was that for the steamgauge ones, the primary is laid out over a different panel background colour...
See the difference below
Mind you, the recommended changes during the course of the investigation (not the investigation itself), were not made mandatory...
instrumentation even made it to the BAe-146 !
Everyone got used to the LED
instrumentation on the LP
/RP/LS/RS layout in the end... I have yet to see a 737 with LED
instruments with the LS
So, yes, it was a training & familiarity issue.
|Quoting kimon (Reply 3):|
On which series did the LCD appear on the 737?
737-300/400/500: Steamgauge, CRT EFIS with Steamgauge EIS, CRT EFIS with LED
EFIS with LCD
|Quoting tdscanuck (Reply 4):|
Is that an STC or a late Boeing option? I'd love to see one of those.
Well, the last 737 Classics built had CRTs (even with the GPS like the NGs, but CRT Classic all the way!) If someone can show a photo of a 737 Classic with LCD
EFIS... I agree with Tom again... EYE CANDY !!!
- Edited the post after unable to get the "twoid:xxxx,yyyy" code to display the photos, replaced with links...