The 787 production rate is steadily increasing as Boeing looks to load a new 787 into the assembly tooling in the two assembly bays at Everett once every 7 days (at least for the next one month). ZA272 (LN 86, SP-LRC) for Polish LOT is due to load into position 1 in 40-26 on Oct. 11. One week later on Oct. 18, ZA273 (LN 87, SP-LRD) also for LOT will load in position 1 in 40-24. Finally on Oct. 25 ZA274 (LN 88, SP-LRE) will load in position 1 in 40-26. This rate (excluding Charleston built 787s) is about 4 per month. Charleston looks to be running at about 0.66 airplanes every month (2 airplanes every 3 months) though it is expected that they will hit one per month shortly. Given these rates, Boeing is very close, if not already there, at producing 787s at a rate of 5/month.
The issues facing them is now clearing the backlog both at Everett and Charleston. Between the two delivery centers there are 16 787s that are ready for pre-flight or are into their test flight activities. Boeing has already delivered 3 787s this month but tentatively have 9 more deliveries scheduled between Oct. 18 and Oct. 26th. It is possible for these 9 aircraft to be delivered but it is all dependent on both factors that are within Boeing's control (technical issues, allocation of resources needed to prepare and test fly the assembled 787s) as well as factor's out of Boeing's control (dealing with mercurial customers such as Air India, Qatar Airways and the country of China). Several handovers should be a no brainer: Ethiopian Airlines (2), United Airlines (1), ANA (1) and LAN (1). That is 5 airplanes right there. The ones that are questionable are Qatar Airways (2), Air India (1) and Hainan Airlines (1), and China Southern (1). With the Chinese carriers, the issue is the certification from CAAC (China's Civil Aviation Authority). It is unknown what the issues despite FAA and EASA certification. CAAC has to certify the 787 for use by Chinese carriers.
Lastly, Boeing has pulled out two 787s from 40-26. ZA271 (LN 78 (SP-LRB) for Polish LOT went to the paint hangar at Everett and ZA432 (LN 79, B-2730) for Hainan Airlines was pulled out to the 40-51 ramp area. Given the extended time that these two airplanes spent in final assembly I expect that there are very few to no assembly tasks remaining on these frames. Additionally ZA511 (LN 63, JA816A) for ANA conducted taxi runs but could not perform its first flight due to weather consideration as Boeing has stringent weather requirements for B-1 flights.