Office Action Predictor
Last updated: April 16, 2026
Application No. 18/635,198

Aircraft Emergency Descent System and Method

Non-Final OA §102
Filed
Apr 15, 2024
Examiner
HESTON, JUSTIN MICHAEL
Art Unit
3644
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Textron Eaviation INC.
OA Round
1 (Non-Final)
81%
Grant Probability
Favorable
1-2
OA Rounds
2y 3m
To Grant
99%
With Interview

Examiner Intelligence

Grants 81% — above average
81%
Career Allow Rate
166 granted / 205 resolved
+29.0% vs TC avg
Strong +20% interview lift
Without
With
+20.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
27 currently pending
Career history
232
Total Applications
across all art units

Statute-Specific Performance

§103
44.1%
+4.1% vs TC avg
§102
33.8%
-6.2% vs TC avg
§112
16.5%
-23.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 205 resolved cases

Office Action

§102
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 1-9 are rejected under 35 U.S.C. 102(a)(1) and (a)(2) as being anticipated by Schaeffer (US 20080243313 A1). Regarding claim 1, Schaeffer teaches an aircraft emergency descent system, comprising: an aircraft (element 12) having a plurality of rotor assemblies (¶ [0001], elements 14), each of the plurality of rotor assemblies having: a rotor coupled to a motor (Figure 1, rotor 14 coupled to motor 16 as explained in ¶ [0010]); and an actuator operable to adjust a blade pitch angle of the rotor (Figures 1-2C, element 36 as explained in ¶ [0018-0021]); at least one governor in digital communication with the plurality of rotor assemblies (Abstract. ¶ [0013, 0023-0024]), the at least one governor having: a rotor module configured to monitor rotational velocity of the rotor of each of the plurality of rotor assemblies (abstract. ¶ [0003-0004]); a pitch adjustment module configured to adjust a collective blade pitch of the rotor of each of the plurality of rotor assemblies (abstract. ¶ [0003-0004]); and a maximum collective blade pitch module having a pre-set maximum blade pitch (abstract. ¶ [0003-0004]); an aircraft control system in digital communication with the plurality of rotor assemblies and the at least one governor (¶ [0013-0016]), the aircraft control system having: an altitude monitor device configured to monitor an altitude of the aircraft (¶ [0013] teaches that the control system comprises a flight control computer (FCC). Examiner takes official notice that flight control computers are well known in the art to monitor and process airspeed, altitude, and attitude variables, and control the aircraft based on the monitored results. See Wikipedia: Flight Control Computer for extrinsic supporting evidence); and a failure detection module configured to detect a failure associated with one or more of the rotor assemblies (¶ [0010, 0022-0025]); wherein when the failure is detected, the aircraft control system is first configured to command a maximum torque to the motor or maximum blade angle of each rotor assembly such that rotational velocity of one or more functioning rotor assemblies begins to either increase, hold, or decrease (¶ [0026-0030]); wherein an increase in rotational velocity is detected by the rotor module of the at least one governor (abstract. ¶ [0003-0004, 0020-0021]), thereby causing the at least one governor to adjust motor torque or the collective blade pitch to attempt to maintain a pre-set desired rotational velocity that could be determined by a failure condition, a flight condition, or a height above ground (¶ [0020-0032]); and wherein the altitude monitor device is configured to determine when the aircraft approaches a pre-set altitude (inasmuch as applicant has claimed); and wherein when the aircraft is at the pre-set altitude, a plurality of the maximum collective blade pitch modules is activated such that the at least one governor adjusts the collective blade pitch to the pre-set maximum blade pitch (¶ [0020-0032]) to slow a rate of descent of the aircraft before the aircraft touches a ground surface (intended use). Regarding claim 2, Schaeffer teaches the invention in claim 1, wherein the plurality of rotor assemblies further comprises one or more rotor assemblies (abstract. ¶ [0003-0004]). Regarding claim 3, Schaeffer teaches the invention in claim 1, wherein the aircraft control system further comprises at least one operator interface for receiving user input for aircraft operation (¶ [0025]). Regarding claim 4, Schaeffer teaches the invention in claim 1, wherein the pre-set desired rotational velocity is a range of velocities (¶ [0040]). Regarding claim 5, Schaeffer teaches the invention in claim 1, wherein the pre-set desired rotational velocity is a set point rotational velocity (¶ [0040]). Regarding claim 6, Schaeffer teaches the invention in claim 1, wherein the at least one governor is configured to adjust the collective blade pitch of the rotor or motor torque of each of the plurality of rotor assemblies when in a failure mode and when not in a failure mode (¶ [0020-0032] inasmuch as applicant has claimed). Regarding claim 7, Schaeffer teaches the invention in claim 1, wherein the pre-set altitude is selected such that a reduced descent rate occurs at a point of touchdown of the aircraft to the ground (intended use). Regarding claim 8, Schaeffer teaches the invention in claim 1, wherein the aircraft comprises a multi-propeller electric vertical take-off and landing aircraft. (¶ [0015] notes that the aircraft conducts vertical take-off and landing. Figure 1 depicts an electric rotor system, and the abstract notes that the aircraft may comprises one or more rotors.) Regarding claim 9, Schaeffer teaches the invention in claim 1, wherein the failure detection control module is configured to determine when one or more of the plurality of rotor assemblies has failed by determining when the rotor of one or more of the plurality of rotor assemblies has slowed in rotational velocity below a threshold level or when the rotor of one or more of the plurality of rotor assemblies has stopped rotating (¶ [0010, 0022-0025] indicate that the flight control system in conjunction with a plurality of sensors, monitors, and processors are used to mitigate failures when they occur. Of which, ¶ [0031] teaches rotation monitor 42 is configured to monitor information related to the rotational velocity of the rotor to include rotational orientation of the rotor, drive shaft, or motor; rotational velocity of the drive shaft, rotor, or motor, via RPM sensors and position sensors. Examiner asserts this satisfies the configuration limitations listed above). Allowable Subject Matter Claims 10-18 are allowable. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure: Schneider et al. (US 20240391600 A1)- Teaches a rotorcraft failure detection system comprising altitude settings and detecting a change in altitude. Any inquiry concerning this communication or earlier communications from the examiner should be directed to JUSTIN MICHAEL HESTON whose telephone number is (571)272-3099. The examiner can normally be reached Monday-Tuesday: 0500-1400, Thursday-Friday by appointment only. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Timothy D Collins can be reached at 571-272-6886. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /JUSTIN MICHAEL HESTON/Examiner, Art Unit 3644
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Prosecution Timeline

Apr 15, 2024
Application Filed
Dec 27, 2025
Non-Final Rejection — §102
Apr 03, 2026
Response Filed

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
81%
Grant Probability
99%
With Interview (+20.1%)
2y 3m
Median Time to Grant
Low
PTA Risk
Based on 205 resolved cases by this examiner. Grant probability derived from career allow rate.

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