Adam,
Don't see why not, the US is an ICAO contracting state. I understand that the FAA PPL includes night VFR privileges, but don't know how much night flying is included in the course, or how it's endorsed. There does not appear to be any requirement, under these circumstances for the night flying/training to have been undertaken with a JAA qualified instructor.
LASORS E4.3 TRANSFERRING NIGHT RATINGS/QUALIFICATIONS (AEROPLANE) FROM NON-JAR-FCL LICENCES
Any previous night flying training completed in an ICAO Contracting State may be credited towards the JAR-FCL Night Qualification (Aeroplane) flying training requirements.
Where an applicant holds a night rating/qualification (or a logbook entry if that is the method of endorsement required by the National Aviation Authority) issued by an ICAO Contracting State, they may apply for the Night Qualification (Aeroplane) endorsement onto their UK or JAR-FCL licence providing the requirements of E4.2 have been met. Logbook evidence of the night flying training completed will be required together with evidence of licence/logbook endorsement.
Where an applicant has completed night training towards a night rating/qualification in an ICAO Contracting State and has met the requirements of E4.2 but do not hold any licence/logbook endorsement from the National Aviation Authority, they will be required to complete discretional night training with a JAA Registered Facility or Approved FTO.
The requirements of E4.2 are;
LASORS E4.2 NIGHT QUALIFICATION (AEROPLANE) FLYING TRAINING/EXPERIENCE REQUIREMENTS
When applying for a Night Qualification you must produce evidence of having met the following flying requirements:-
a. 5 hours overall night training in aeroplanes to include b) and c);
b. i. 3 hours dual night training to include ii);
ii. 1 hour dual night navigation;
c. 5 Take-off and full stop landings at night as PIC of aeroplanes.
So, if you have at least these, you should be able to just apply to have the NQ added to your JAA-PPL(A). Then you just send off the SRG1126 form, accompanied of course by the ubiquitous SRG1187.
