FCC certification for nrf24l01+

Is nrf24l01+ from Nordic Semiconductors FCC certified ? It is hard to find out from their datasheet whether FCC approved ?
Is it FCC approved ?

If it is approved and I use it in my PCB and control it via my ARM cortex processor, do I need to get the entire PCB board FCC approved ?

Also, I am using sierrra wireless HL series modem chip which is FCC approved. This will also be on my PCB. So, do I have to get my PCB FCC approved again although my modem is FCC approved ?

As I understand it, generally the RF wireless chip by itself does not get FCC approval, since it is the layout and antenna matching that impact on the performance i.e the final configuration as a working system. Antenna matching must be designed to minimize harmonics, and the board layout impacts on spurious emissions as well, since there are often crystal oscillators and switch mode power supplies on board.
Certification is costly, and may require a few iterations of the board if the design is not done by a competent RF engineer. There are a lot of rules and which govern these issues, if you are going into volume production, seek help from someone who does this sort of work for a living. If you are only doing a few, there are rules which say that you don't need certification, as long as you stay within the bounds set down for the frequency, bandwidth, and power used, but if someone complains about interference, you must turn the equipment off.
I would welcome comment myself, from someone who has gone through the process of getting FCC approval, so will follow this thread with interest.
Richard

As Richard states, chips are not FCC certified. They have to behave to enable certification so it's important that they function within the limits so that you can achieve certification. It's a reasonable question to ask if the chips have been used in certified designs.

The power supply, antenna circuit, and even how the firmware controls a radio chip will have impact on FCC certification.

Some devices, such as your MODEM can be packaged in modules and be certified so that you can place a label on your device for the intentional radiator parts of a certification but those devices will have integrated antenna's and internal control over the radio.

If your device is consumer based and especially if it radiates RF, you will need FCC certifications. I've heard that there are some exceptions for low volume products but I don't know about that. I'm under the impression you can get around FCC only if your product does not radiate and is operated mobile, as in not in the same place all the time. The key here is that FCC is concerned with how your device might interfere with someone else. If you are moving, then not much chance of any major interference from non intentional radiators...