According to the IRS:
"But, you dont need to report foreign financial accounts that are:
Correspondent/Nostro accounts,
Owned by a governmental entity,
Owned by an international financial institution,
Maintained on a United States military banking facility,
Held in an individual retirement account (IRA) you own or are beneficiary of,
Held in a retirement plan of which youre a participant or beneficiary, or
Part of a trust of which youre a beneficiary, if a U.S. person (trust, trustee of the trust or agent of the trust) files an FBAR reporting these accounts."
Held in a retirement plan would IMO relate to pension accounts.