B737 LE FLAPS TRANSIT QRH question?
The QRH (Classic) calls for a Flap 15 landing with a LE Flaps Transit Light illuminated.
As the trailing edge flaps are still being extended by the normal flap drive if you follow the NNC, this requirement can’t be because of go-around considerations? i.e. slow movement due use of the electric TE flap drive.
Are there other reasons (aerodynamic?) why the TE flaps should not be at F30 or F40 (well beyond 15) with a LE device at the extended, rather than the fully extended position? Or is the check list written for the worst case of a complete LE Flap/Slat failure with the device or devices in the fully retracted position?
I’m sure someone will know the answer, looking forward to your replies.