Large Transport; Low Wing; 2 Turbojet Eng
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 200; Flight Crew Total 17500; Flight Crew Type 3500
Confusion; Situational Awareness; Training / Qualification
Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued Advisory / Alert; Air Traffic Control Issued New Clearance; Flight Crew Requested ATC Assistance / Clarification
Aircraft; Company Policy; Procedure
Filed SAN POGGI 2 JLI DCT TRM. [I] noticed on ATIS that JLI was out of service. Expecting change on clearance; PDC stated revised segment POGGI 2 IPL J18 PXR. We input corrected route in FMC. On POGGI 2 Commercial Chart plate; noted that DME/DME/IRU or GPS required. We had non-GPS aircraft; but saw that was OK. Also thought since JLI was out of service; revised routing to IPL would be best routing. Upon departure; a very astute Controller asked question regarding some aircraft having problems with routing on POGGI 2. I reread notes and verified DME/DME/IRU was valid course guidance to POGGI. I then reread note regarding transitions (the notes on the Commercial Charts page). I had to reread several times because they seemed to be backward from all logical and sensible interpretation. One note states that for Julian transition; only PGY must be operational. The other note states that for the Imperial transition; PGY; MZB and JLI must be operational! For the IPL transition; only PGY is required to navigate; yet the note states MZB and JLI must be operational. Realizing this strange but required note anomaly; prior to PGY; and before commencing any transition; I asked for a radar vector; which we received. Thank you to a very conscientious Controller for drawing my attention to my misreading of the notes and quickly assigning a vector before we began a transition that; for reasons which are still mystifying to me; would have been not in compliance with the second note.
[No additional information contained in Narrative #2.]
The SAN POGGI TWO RNAV requires PGY NAVAID to be operational if an aircraft is non-GPS equipped; but a crew had not seen chart note until ATC questioned their GPS capability since PGY was non-operational.