we can not refuse to fly the 100 seat aircraft. our contract allows the company to add a new aircraft type but sets for a specific time frame where we have to agree on a pay scale, below is the contract language:

2. The parties will meet within (15) days following written request by either
party to negotiate rates of pay for such aircraft type. Should negotiations
result in an agreement, the new aircraft type will be flown in accordance
with the terms of the agreement. If negotiations do not result in an
agreement within one hundred (100) days from the date of
commencement of negotiations, either party may submit the dispute to
final and binding interest arbitration.

3. The dispute shall be heard before an arbitrator selected in accordance
with the procedures set forth in Article 18 (Resolution of Disputes).

4. The Hearing will be conducted as soon as possible but in no event more
than three (3) months after arbitrator selection, unless mutually agreed
otherwise. Briefing by the parties, if any, will be completed within thirty
(30) days after the hearing date. The arbitrator shall issue a decision no
later than sixty (60) days after the close of the hearing or of receipt of the
parties brief, whichever is later.

5. Upon final agreement, or issuance of the arbitrators decision, as the case
may be, retroactive compensation, if applicable, will be paid to all pilots
who operate a disputed aircraft type placed in revenue service before the
parties’ agreement became effective or the award issued.