ALARM 1201: LUNAR DESCENT // GRID STABILITY
Real-time priority handling: Apollo guidance computer meets dispatch protocols. Documented 20 Jul 1969 / 2026-07.
AGC SIDE
• Rendezvous radar overload → Alarm 1201
• Scheduler sheds low-priority tasks (non-critical displays, logging)
• Hard deadline: lunar landing at 102:45:40 GET
• Result: CONTINUED DESCENT. Source: NASA AGC source logs Q905795
• Scheduler sheds low-priority tasks (non-critical displays, logging)
• Hard deadline: lunar landing at 102:45:40 GET
• Result: CONTINUED DESCENT. Source: NASA AGC source logs Q905795
GRID DISPATCH SIDE
• Frequency drop / peak load → Automatic load shed
• SCADA priority stack: critical feeders first (hospitals, pumps)
• Hard deadline: 59.3 Hz under-frequency trip
• Result: STABLE FREQUENCY. Matches AGC graceful degradation.
• SCADA priority stack: critical feeders first (hospitals, pumps)
• Hard deadline: 59.3 Hz under-frequency trip
• Result: STABLE FREQUENCY. Matches AGC graceful degradation.
PARALLEL PROTOCOL
Both systems treat overload as interrupt, not failure.
Shed non-essentials → preserve core function.
Exact match between lunar computer and Florida power plant SOPs.
Shed non-essentials → preserve core function.
Exact match between lunar computer and Florida power plant SOPs.